Sono-Tek (SOTK) 10-K 24 May 18 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Feb. 28, 2018	May 10, 2018	Aug. 31, 2017
Document And Entity Information
Entity Registrant Name	SONO TEK CORP
Entity Central Index Key	806,172
Document Type	10-K
Document Period End Date	Feb. 28, 2018
Amendment Flag	false
Current Fiscal Year End Date	--02-28
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Smaller Reporting Company
Entity Public Float			$ 14,504,312
Entity Common Stock, Shares Outstanding		14,989,003
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2,018

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Feb. 28, 2018	Feb. 28, 2017
Current Assets:
Cash and cash equivalents	$ 2,016,464	$ 2,557,223
Marketable Securities	4,405,900	2,342,184
Accounts receivable (less allowance of $46,000)	774,778	1,150,801
Inventories, net	1,354,083	1,340,684
Prepaid expenses and other current assets	139,406	127,276
Total current assets	8,690,631	7,518,168
Land	250,000	250,000
Buildings, net	1,807,339	1,875,074
Equipment, furnishings and leasehold improvements, net	498,401	624,197
Intangible assets, net	136,576	153,326
Deferred tax asset	396,387	315,171
TOTAL ASSETS	11,779,334	10,735,936
Current Liabilities:
Accounts payable	652,863	336,561
Accrued expenses	893,192	868,755
Customer deposits	344,098	78,902
Current maturities of long term debt	156,119	149,698
Income taxes payable	84,621	14,619
Total current liabilities	2,130,893	1,448,535
Deferred tax liability	385,384	337,726
Long term debt, less current maturities	870,532	1,026,650
Total liabilities	3,386,809	2,812,911
Commitments and Contingencies
Stockholders' Equity
Common stock	149,864	149,611
Additional paid-in capital	8,901,171	8,859,486
Accumulated deficit	(760,115)	(1,128,322)
Accumulated other comprehensive income (loss)	101,605	42,250
Total stockholders' equity	8,392,525	7,923,025
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 11,779,334	$ 10,735,936

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($)	Feb. 28, 2018	Feb. 28, 2017
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 46,000	$ 46,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	25,000,000	25,000,000
Common stock, issued shares	14,986,367	14,961,076
Common stock, outstanding shares	14,986,367	14,961,076

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Income Statement [Abstract]
Net Sales	$ 11,008,444	$ 9,634,956
Cost of Goods Sold	5,711,951	5,272,050
Gross Profit	5,296,493	4,362,906
Operating Expenses
Research and product development	1,280,308	1,275,902
Marketing and selling	2,516,461	2,217,218
General and administrative	1,118,107	1,048,407
Total Operating Expenses	4,914,876	4,541,527
Operating Income (Loss)	381,617	(178,621)
Other Income (Expense):
Interest Expense	(46,117)	(52,294)
Interest and Dividend Income	91,459	70,797
Other Income	33,104	236,450
Income Before Income Taxes	460,063	76,332
Income Tax (Benefit) Expense	91,856	(19,374)
Net Income	368,207	95,706
Other Comprehensive Income (Loss)
Net unrealized gain on marketable securities	59,355	112,390
Comprehensive Income	$ 427,562	$ 208,096
Basic Earnings Per Share	$ 0.02	$ 0.01
Diluted Earnings Per Share	$ 0.02	$ 0.01
Weighted Average Shares - Basic	14,968,450	14,961,076
Weighted Average Shares - Diluted	15,095,123	15,018,282

Consolidated Statements of Shar

Consolidated Statements of Shareholders Equity - USD ($)	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Total
Beginning balance (shares) at Feb. 29, 2016	14,955,400
Beginning balance at Feb. 29, 2016	$ 149,554	$ 8,812,224	$ (70,140)	$ (1,224,028)	$ 7,667,610
Exercise of stock options (shares)	5,676
Exercise of stock options	$ 57	(57)
Stock based compensation expense		47,319			47,319
Unrealized loss on marketable securities			112,390		112,390
Net Income				95,706	95,706
Ending balance (shares) at Feb. 28, 2017	14,961,076
Ending balance at Feb. 28, 2017	$ 149,611	8,859,486	42,250	(1,128,322)	7,923,025
Exercise of stock options (shares)	25,291
Exercise of stock options	$ 253	(43)			210
Stock based compensation expense		41,728			41,728
Unrealized loss on marketable securities			59,355		59,355
Net Income				368,207	368,207
Ending balance (shares) at Feb. 28, 2018	14,986,367
Ending balance at Feb. 28, 2018	$ 149,864	$ 8,901,171	$ 101,605	$ (760,115)	$ 8,392,525

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 368,207	$ 95,706
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	399,526	440,223
Stock based compensation expense	41,728	47,319
Inventory reserve	104,601	80,006
Deferred tax expense	(33,558)	5,750
(Increase) Decrease in:
Accounts receivable	376,023	63,912
Inventories	(118,000)	524,693
Prepaid expenses and other assets	(12,130)	(17,322)
(Decrease) Increase in:
Accounts payable and accrued expenses	340,739	(16,017)
Customer deposits	265,196	(122,576)
Income taxes payable	70,002	(73,041)
Net Cash Provided by Operating Activities	1,802,334	1,028,653
CASH FLOW FROM INVESTING ACTIVITIES:
Purchase of equipment, furnishings and leasehold improvements	(189,245)	(182,837)
(Purchase) of marketable securities	(2,004,360)	(533,559)
Net Cash (Used In) Investing Activities	(2,193,605)	(716,396)
CASH FLOW FROM FINANCING ACTIVITIES:
Proceeds from exercise of options	210
Repayment of long term debt	(149,698)	(143,389)
Net Cash (Used In) Financing Activities	(149,488)	(143,389)
NET (DECREASE) IN CASH AND CASH EQUIVALENTS	(540,759)	168,868
CASH AND CASH EQUIVALENTS
Beginning of year	2,557,223	2,388,355
End of year	2,016,464	2,557,223
SUPPLEMENTAL CASH FLOW DISCLOSURE:
Interest paid	46,117	52,294
Income Taxes Paid	$ 59,494	$ 56,502

Business Description

Business Description	12 Months Ended
	Feb. 28, 2018
Accounting Policies [Abstract]
Business Description	NOTE 1: BUSINESS DESCRIPTION Sono-Tek Corporation (the “Company”) was incorporated in New York on March 21, 1975 for the purpose of engaging in the development, manufacture, and sale of ultrasonic liquid atomizing nozzles, which are sold world-wide. Ultrasonic nozzle systems atomize low to medium viscosity liquids by converting electrical energy into mechanical motion in the form of high frequency ultrasonic vibrations that break liquids into minute drops that can be applied to surfaces at low velocity. Based on its core technology of ultrasonic liquid atomizing nozzles, the Company has developed intellectual property in the area of precision spray coating of liquids. The Company is presently engaged in the development, manufacture, sales, installation and servicing of diverse ultrasonic coating equipment for various manufacturing industries worldwide.

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Feb. 28, 2018
Notes to Financial Statements
Significant Accounting Policies	NOTE 2: SIGNIFICANT ACCOUNTING POLICIES Advertising Expenses - Allowance for doubtful accounts - Available-For-Sale Investments – Cash and Cash Equivalents - Concentration of Credit Risk - The Company had one customer, which accounted for 7% of sales during fiscal 2017. Six customers accounted for 46% of the outstanding accounts receivables at February 28, 2017. Consolidation Earnings Per Share - Equipment, Furnishings and Leasehold Improvements Fair Value of Financial Instruments - Level 1: Quoted prices in active markets. Level 2: Observable market-based inputs or unobservable inputs that are corroborated by market data. Level 3: Unobservable inputs for which there is little or no market data, which require the use of the reporting entity’s own assumptions. The fair values of financial assets of the Company were determined using the following categories at February 28, 2018 and 2017, respectively: Quoted Prices in Active Markets (Level 1) February 28, 2018 2017 Marketable Securities $ 4,405,900 $ 2,342,184 Marketable Securities include mutual funds of $4,405,900 and $2,342,184, that are considered to be highly liquid and easily tradeable as of February 28, 2018 and 2017, respectively. These securities are valued using inputs observable in active markets for identical securities and are therefore classified as Level 1 within the Company’s fair value hierarchy. The Company’s marketable securities are considered to be available-for-sale investments as defined under ASC 320 “Investments – Debt and Equity Securities.” Income Taxes Intangible Assets - Inventories - Land and Buildings – Long-Lived Assets - Management Estimates - New Accounting Pronouncements- Revenue from Contracts with Customers” (Topic 606) The new revenue standard is principle based and interpretation of those principles may vary from company to company based on their unique circumstances. It is possible that interpretation, industry practice, and guidance may evolve as companies and the accounting profession work to implement this new standard. The Company is still in the process of evaluating the effect of the new standard on the Company’s historical financial statements and disclosures. While the Company has not completed its evaluation, the Company currently believes that the impact to revenue and expense recognized will not be material to any of the years presented. In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220), “ Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income Other than, Accounting Standards Update (“ASU”) No. 2014-09 and ASU 2018-02 discussed above, all new accounting pronouncements issued but not yet effective have been deemed to be not applicable to the Company. Hence, the adoption of these new accounting pronouncements, once effective, is not expected to have an impact on the Company. Product Warranty Reclassifications – Recognition of Revenue Research and Product Development Expenses - Shipping and Handling Costs –

Stock Based Compensation

Stock Based Compensation	12 Months Ended
	Feb. 28, 2018
Notes to Financial Statements
Stock Based Compensation	NOTE 3: STOCK-BASED COMPENSATION The Company adopted ASC 718, “Share Based Payments.” which requires companies to expense the value of employee stock options and similar awards. The weighted-average fair value of options has been estimated on the date of grant using the Black-Scholes options-pricing model. The weighted-average Black-Scholes assumptions are as follows: Fiscal Year Ended February 28, 2018 2017 Expected life 2-8 years 4 years Risk free interest rate 1.79% - 2.32% 1.16% Expected volatility 12.65% - 22.24% 28.02% Expected dividend yield 0% 0% In computing the impact, the fair value of each option is estimated on the date of grant based on the Black-Scholes options-pricing model utilizing certain assumptions for a risk-free interest rate, volatility and expected remaining lives of the awards. The assumptions used in calculating the fair value of share-based payment awards represent management’s best estimates, but these estimates involve inherent uncertainties and the application of management judgment. As a result, if factors change and the Company uses different assumptions, the Company’s stock-based compensation expense could be materially different in the future. In addition, the Company is required to estimate the expected forfeiture rate and only recognize expense for those shares expected to vest. In estimating the Company’s forfeiture rate, the Company analyzed its historical forfeiture rate, the remaining lives of unvested options, and the number of vested options as a percentage of total options outstanding. If the Company’s actual forfeiture rate is materially different from its estimate, or if the Company reevaluates the forfeiture rate in the future, the stock-based compensation expense could be significantly different from what the Company has recorded in the current period. For the years ended February 28, 2018 and 2017, net income and earnings per share reflect the actual deduction for stock-based compensation expense. The impact of applying ASC 718 approximated $41,728 and $47,319 in additional compensation expense for the years then ended, respectively. Such amount is included in general and administrative expenses on the statement of operations. The expense for stock-based compensation is a non-cash expense item.

Inventories

Inventories	12 Months Ended
	Feb. 28, 2018
Notes to Financial Statements
Inventories	NOTE 4: INVENTORIES Inventories consist of the following: February 28, 2018 2017 Raw materials and subassemblies $ 673,969 $ 1,197,506 Finished goods 395,410 369,428 Work in process 489,082 28,460 Total 1,558,461 1,595,394 Less: Allowance (204,378 ) (254,710 ) Net inventories $ 1,354,083 $ 1,340,684

Buildings, Equipment, Furnishin

Buildings, Equipment, Furnishings and Leasehold Improvements	12 Months Ended
	Feb. 28, 2018
Property, Plant and Equipment [Abstract]
Buildings, Equipment, Furnishings and Leasehold Improvements	NOTE 5: BUILDINGS, EQUIPMENT, FURNISHINGS AND LEASEHOLD IMPROVEMENTS Equipment, furnishings and leasehold improvements consist of the following: February 28, February 28, 2018 2017 Buildings $ 2,250,000 $ 2,250,000 Laboratory equipment 1,082,051 1,012,824 Machinery and equipment 872,598 858,694 Leasehold improvements 413,529 369,433 Tradeshow and demonstration equipment 1,070,860 1,072,425 Furniture and fixtures 971,011 907,428 Totals 6,660,049 6,470,804 Less: Accumulated depreciation (4,354,309 ) (3,971,533 ) $ 2,305,740 $ 2,499,271 Depreciation expense for the years ended February 28, 2018 and 2017 was $382,777 and $429,360, respectively.

Accrued Expenses

Accrued Expenses	12 Months Ended
	Feb. 28, 2018
Payables and Accruals [Abstract]
Accrued Expenses	NOTE 6: ACCRUED EXPENSES Accrued expenses consist of the following: February 28, 2018 2017 Accrued compensation $ 362,405 $ 303,711 Estimated warranty costs 64,050 32,700 Accrued commissions 194,934 255,604 Professional fees 64,928 63,462 Other accrued expenses 206,875 213,278 $ 893,192 $ 868,755

Revolving Line of Credit

Revolving Line of Credit	12 Months Ended
	Feb. 28, 2018
Notes to Financial Statements
Revolving Line of Credit	NOTE 7: REVOLVING LINE OF CREDIT The Company has a $750,000 revolving line of credit at prime which was 4.50% at February 28, 2018 and 3.75% at February 28, 2017. The line of credit is collateralized by all assets of the Company, except for the land and buildings. The line of credit is payable on demand and must be retired for a 30-day period once annually. If the Company fails to perform the 30-day annual pay down or if the bank elects to terminate the credit line, the bank may at its option convert the outstanding balance to a 36-month term note with payments including interest in 36 equal installments. As of February 28, 2018, and 2017, the Company’s outstanding balance was $0, and the unused credit line was $750,000.

Long Term Debt

Long Term Debt	12 Months Ended
	Feb. 28, 2018
Notes to Financial Statements
Long Term Debt	NOTE 8: LONG-TERM DEBT Long-term debt consists of the following: February 28, 2018 2017 Note payable, bank, collateralized by land and buildings, payable in monthly installments of principal and interest of $16,358 through January 2024. Interest rate 4.15%. 10 year term. 1,026,651 1,176,348 Total long term debt 1,026,651 1,176,348 Due within one year 156,119 149,698 Due after one year $ 870,532 $ 1,026,650 Long-term debt is payable as follows: Fiscal Year ending February 28, 2019 156,119 2020 162,816 2021 169,716 2022 177,081 2023 184,677 2024 176,242 $ 1,026,651

Bank Guarantees

Bank Guarantees	12 Months Ended
	Feb. 28, 2018
Notes to Financial Statements
Bank Guarantees	NOTE 9: BANK GUARANTEES As of February 28, 2018, $72,318 of the Company’s cash on deposit with a foreign bank was being utilized to collateralize guarantees issued by the bank in favor of international customers of the Company to secure cash deposits on orders that have been remitted to the Company. The customers may exercise the guarantees, subject to certain performance requirements being met by the Company. The guarantees expire at various dates in 2018.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Feb. 28, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 10: COMMITMENTS AND CONTINGENCIES The Company did not have any material commitments or contingencies as of February 28, 2018.

Income Taxes

Income Taxes	12 Months Ended
	Feb. 28, 2018
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 11: INCOME TAXES The annual provision (benefit) for income taxes differs from amounts computed by applying the maximum U.S. Federal income tax rate of 34% to pre-tax income as follows: February 28, 2018 2017 Expected federal income tax $ 156,421 $ 64,165 State tax, net of federal 24,383 10,002 Research and development tax credits (57,994 ) (70,827 ) Under (Overaccrual) of prior year state taxes 40,793 (63,351 ) Change in recapture tax rate from 39.3% to 27.3% 15,343 — Permanent timing difference 33,107 17,795 Change in valuation allowances (159,300 ) — Other adjustments 39,103 22,842 Income tax Expense (Benefit) $ 91,856 ($ 19,374 ) The deferred tax asset and liability are comprised of the following: February 28, 2018 2017 Deferred tax asset Inventory $ 186,800 $ 297,000 Allowance for accounts receivable 18,100 18,100 Accrued expenses and other 111,200 79,300 Research tax credits 208,300 208,000 Valuation allowance (128,000 ) (287,300 ) Deferred tax asset – Long Term 396,400 315,100 Deferred tax liability Intangible asset amortization (25,000 ) (30,000 ) Building and leasehold depreciation (360,400 ) (308,000 ) Deferred tax liability – Long Term $ (385,400 ) $ (338,000 ) At February 28, 2018 and 2017, the Company had $208,000 of research and development tax credits being carried forward. Deferred income taxes have been provided by temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for tax purposes. To the extent allowed by GAAP, we provide a valuation allowance against the deferred tax assets for amounts when the realization is uncertain. On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cut and Jobs Act (the "Tax Act"). The Tax Act establishes new tax laws that affects 2018 and future years, including a reduction in the U.S. federal corporate tax rate to 21%, effective March 1, 2018.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Feb. 28, 2018
Equity [Abstract]
Stockholders' Equity	NOTE 12: STOCKHOLDERS’ EQUITY Stock Options Under the 2003 Stock Incentive Plan, as amended (the "2003 Plan"), until May 2013, options were available to be granted to officers, directors, consultants and employees of the Company and its subsidiaries to purchase up to 1,500,000 of the Company's common shares. As of February 28, 2018, there were 168,000 options outstanding under the 2003 Plan, under which no additional options may be granted. Under the 2013 Stock Incentive Plan, option prices must be at least 100% of the fair market value of the common stock at time of grant. For qualified employees, except under certain circumstances specified in the plan or unless otherwise specified at the discretion of the Board of Directors, no option may be exercised prior to one year after date of grant, with the balance becoming exercisable in cumulative installments over a three-year period during the term of the option, and terminating at a stipulated period of time after an employee's termination of employment. During fiscal 2018, the Company granted options to acquire 110,000 shares to an officer, at an exercise price of $1.06 and options for 20,000 shares exercisable at prices from $1.15 to $1.67 to employees of the Company. During fiscal 2017, the Company granted options to acquire 400,000 shares to officers, at an exercise price of $0.91. A summary of the activity of both plans for fiscal 2018 and fiscal 2017 is as follows: Weighted Average Stock Options Exercise Price $ Fair Value Outstanding Exercisable Outstanding Exercisable Vested Balance - February 29, 2016 464,100 349,820 $ 0.91 $ 0.83 $ 0.39 Granted 400,000 0.91 Exercised (10,000 ) (0.48 ) Cancelled (14,500 ) (1.21 ) Balance - February 28, 2017 839,600 395,405 $ 0.91 $ 0.89 $ 0.32 Granted 130,000 $ 1.12 Exercised (57,500 ) (0.84 ) Cancelled — — Balance - February 28, 2018 912,100 425,400 $ 0.96 $ 0.92 $ 0.35 The intrinsic value of the Company’s options exercised during fiscal 2018 and fiscal 2017 was $19,250 and $1,632, respectively. Information, at date of issuance, regarding stock option grants for fiscal 2018: Shares Weighted Average Exercise Price Weighted Average Fair Value Year ended February 28, 2018: Exercise price exceeds market price — — — Exercise price equals market price 130,000 $ 1.12 $ .18 Exercise price is less than market price — — — The aggregate intrinsic value of the Company’s outstanding options at February 28, 2018 and 2017 was $233,776 and $226,601, respectively. The following table summarizes information about stock options outstanding and exercisable at February 28, 2018: Weighted Average Number Remaining Life Exercise Number Outstanding in Years Price Exercisable Range of exercise prices: $.42 to $.50 12,500 4.40 $ 0.47 12,500 $.51 to $1.00 533,000 7.32 $ 0.83 186,000 $1.01 to $1.20 341,600 7.42 $ 1.10 214,400 $1.21 to $1.67 25,000 7.82 $ 1.47 12,500 Total Options: 912,100 425,400

Earnings Per Share

Earnings Per Share	12 Months Ended
	Feb. 28, 2018
Notes to Financial Statements
Earnings Per Share	Fiscal Year Ended February 28, 2018 2017 Numerator for basic and diluted earnings per share $ 368,207 $ 95,706 Denominator for basic earnings per share - weighted average 14,968,450 14,961,076 Effects of dilutive securities: Stock options for employees, directors and outside consultants 126,673 57,206 Denominator for diluted earnings per share 15,095,123 15,018,282 Basic Earnings Per Share – Weighted Average $ 0.02 $ 0.01 Diluted Earnings Per Share – Weighted Average $ 0.02 $ 0.01

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	12 Months Ended
	Feb. 28, 2018
Equity [Abstract]
Other Comprehensive Income (Loss)	NOTE 14: OTHER COMPREHENSIVE INCOME (LOSS) As of February 28, 2018, certain of the Company’s marketable securities were in an unrealized gain position. Unrealized gains and losses are principally due to changes in the fair value of the Company’s investments held as available-for-sale. Because the Company has the ability and intent to hold the securities for the foreseeable future as classified as available-for-sale, the Company does not deem these unrealized gains or losses to be other than temporary. For fiscal 2018, the unrealized gain on the Company’s available-for-sale marketable securities was $59,000 compared with $112,000 for the prior fiscal year. As of February 28, 2018, the unrealized gain on the Company’s available-for-sale securities was $102,000. The following table sets forth the changes in Accumulated Other Comprehensive Gain for fiscal 2018: Unrealized Gain on Beginning Balance February 28, 2017 $ 42,250 Current Period Unrealized Gains 59,355 Ending Balance February 28, 2018 $ 101,605

Other Income

Other Income	12 Months Ended
	Feb. 28, 2018
Other Income and Expenses [Abstract]
Other Income	NOTE 15: OTHER INCOME Included in other income is the net revenue related to the rental of the Company’s real estate. For fiscal 2018, the Company’s rental revenue was $77,800, expenses were $58,900 and the net revenue was $18,900. For fiscal 2017, the Company’s rental revenue was $89,000, expenses were $59,000 and the net revenue was $30,000. During fiscal 2017, the Company received a payout of $200,000 in life insurance proceeds from the death of a former employee.

Significant Customers and Forei

Significant Customers and Foreign Sales	12 Months Ended
	Feb. 28, 2018
Segment Reporting [Abstract]
Significant Customers and Foreign Sales	NOTE 16: SIGNIFICANT CUSTOMERS AND FOREIGN SALES Export sales to customers located outside the United States were approximately as follows: Fiscal Year Ended February 28, 2018 2017 Latin America $ 1,112,000 $ 1,177,000 Asia Pacific 2,459,000 2,671,000 Europe, Middle East, Asia 2,618,000 1,939,000 Other 114,000 265,000 $ 6,303,000 $ 6,052,000 During fiscal 2018 and fiscal 2017, sales to foreign customers accounted for approximately $6,303,000 and $6,052,000, or 57% and 63% respectively, of total revenues. One customer accounted for 8% of the Company’s sales for fiscal 2018.

Subsequent Events

Subsequent Events	12 Months Ended
	Feb. 28, 2018
Notes to Financial Statements
Subsequent Events	NOTE 17: SUBSEQUENT EVENTS The Company has evaluated subsequent events for disclosure purposes.

Significant Accounting Polici24

Significant Accounting Policies (Policies)	12 Months Ended
	Feb. 28, 2018
Notes to Financial Statements
Advertising Expenses	Advertising Expenses -
Allowance for doubtful accounts	Allowance for doubtful accounts -
Available-For-Sale Investments	Available-For-Sale Investments –
Cash and Cash Equivalents	Cash and Cash Equivalents -
Concentration of Credit Risk	Concentration of Credit Risk - The Company had one customer, which accounted for 7% of sales during fiscal 2017. Six customers accounted for 46% of the outstanding accounts receivables at February 28, 2017.
Consolidation	Consolidation
Earnings Per Share	Earnings Per Share -
Equipment, Furnishings and Leasehold Improvements	Equipment, Furnishings and Leasehold Improvements
Fair Value of Financial Instruments	Fair Value of Financial Instruments - Level 1: Quoted prices in active markets. Level 2: Observable market-based inputs or unobservable inputs that are corroborated by market data. Level 3: Unobservable inputs for which there is little or no market data, which require the use of the reporting entity’s own assumptions. The fair values of financial assets of the Company were determined using the following categories at February 28, 2018 and 2017, respectively: Quoted Prices in Active Markets (Level 1) February 28, 2018 2017 Marketable Securities $ 4,405,900 $ 2,342,184 Marketable Securities include mutual funds of $4,405,900 and $2,342,184, that are considered to be highly liquid and easily tradeable as of February 28, 2018 and 2017, respectively. These securities are valued using inputs observable in active markets for identical securities and are therefore classified as Level 1 within the Company’s fair value hierarchy. The Company’s marketable securities are considered to be available-for-sale investments as defined under ASC 320 “Investments – Debt and Equity Securities.”
Income Taxes	Income Taxes
Intangible Assets	Intangible Assets -
Inventories	Inventories -
Land and Buildings	Land and Buildings –
Long-Lived Assets	Long-Lived Assets -
Management Estimates	Management Estimates -
New Accounting Pronouncements	New Accounting Pronouncements- Revenue from Contracts with Customers” (Topic 606) The new revenue standard is principle based and interpretation of those principles may vary from company to company based on their unique circumstances. It is possible that interpretation, industry practice, and guidance may evolve as companies and the accounting profession work to implement this new standard. The Company is still in the process of evaluating the effect of the new standard on the Company’s historical financial statements and disclosures. While the Company has not completed its evaluation, the Company currently believes that the impact to revenue and expense recognized will not be material to any of the years presented. In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220), “ Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income Other than, Accounting Standards Update (“ASU”) No. 2014-09 and ASU 2018-02 discussed above, all new accounting pronouncements issued but not yet effective have been deemed to be not applicable to the Company. Hence, the adoption of these new accounting pronouncements, once effective, is not expected to have an impact on the Company.
Product Warranty	Product Warranty
Reclassifications	Reclassifications –
Recognition of Revenue	Recognition of Revenue
Research and Product Development Expenses	Research and Product Development Expenses -
Shipping and Handling Costs	Shipping and Handling Costs –

Significant Accounting Polici25

Significant Accounting Policies (Tables)	12 Months Ended
	Feb. 28, 2018
Notes to Financial Statements
Fair values of financial assets of the Company	Quoted Prices in Active Markets (Level 1) February 28, 2018 2017 Marketable Securities $ 4,405,900 $ 2,342,184

Stock Based Compensation (Table

Stock Based Compensation (Tables)	12 Months Ended
	Feb. 28, 2018
Notes to Financial Statements
Weighted-average Black-Scholes assumptions	Fiscal Year Ended February 28, 2018 2017 Expected life 2-8 years 4 years Risk free interest rate 1.79% - 2.32% 1.16% Expected volatility 12.65% - 22.24% 28.02% Expected dividend yield 0% 0%

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Feb. 28, 2018
Inventories Tables
Inventories	February 28, 2018 2017 Raw materials and subassemblies $ 673,969 $ 1,197,506 Finished goods 395,410 369,428 Work in process 489,082 28,460 Total 1,558,461 1,595,394 Less: Allowance (204,378 ) (254,710 ) Net inventories $ 1,354,083 $ 1,340,684

Buildings, Equipment, Furnish28

Buildings, Equipment, Furnishings and Leasehold Improvements (Tables)	12 Months Ended
	Feb. 28, 2018
Property, Plant and Equipment [Abstract]
Equipment, furnishings and leasehold improvements	February 28, February 28, 2018 2017 Buildings $ 2,250,000 $ 2,250,000 Laboratory equipment 1,082,051 1,012,824 Machinery and equipment 872,598 858,694 Leasehold improvements 413,529 369,433 Tradeshow and demonstration equipment 1,070,860 1,072,425 Furniture and fixtures 971,011 907,428 Totals 6,660,049 6,470,804 Less: Accumulated depreciation (4,354,309 ) (3,971,533 ) $ 2,305,740 $ 2,499,271

Accrued Expenses (Tables)

Accrued Expenses (Tables)	12 Months Ended
	Feb. 28, 2018
Payables and Accruals [Abstract]
Accrued expenses	February 28, 2018 2017 Accrued compensation $ 362,405 $ 303,711 Estimated warranty costs 64,050 32,700 Accrued commissions 194,934 255,604 Professional fees 64,928 63,462 Other accrued expenses 206,875 213,278 $ 893,192 $ 868,755

Long Term Debt (Tables)

Long Term Debt (Tables)	12 Months Ended
	Feb. 28, 2018
Long Term Debt Tables
Long-term debt	February 28, 2018 2017 Note payable, bank, collateralized by land and buildings, payable in monthly installments of principal and interest of $16,358 through January 2024. Interest rate 4.15%. 10 year term. 1,026,651 1,176,348 Total long term debt 1,026,651 1,176,348 Due within one year 156,119 149,698 Due after one year $ 870,532 $ 1,026,650
Long-term debt payables	Fiscal Year ending February 28, 2019 156,119 2020 162,816 2021 169,716 2022 177,081 2023 184,677 2024 176,242 $ 1,026,651

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Feb. 28, 2018
Income Tax Disclosure [Abstract]
Income tax reconciliation	February 28, 2018 2017 Expected federal income tax $ 156,421 $ 64,165 State tax, net of federal 24,383 10,002 Research and development tax credits (57,994 ) (70,827 ) Under (Overaccrual) of prior year state taxes 40,793 (63,351 ) Change in recapture tax rate from 39.3% to 27.3% 15,343 — Permanent timing difference 33,107 17,795 Change in valuation allowances (159,300 ) — Other adjustments 39,103 22,842 Income tax Expense (Benefit) $ 91,856 ($ 19,374 )
Deferred tax asset and liability components	February 28, 2018 2017 Deferred tax asset Inventory $ 186,800 $ 297,000 Allowance for accounts receivable 18,100 18,100 Accrued expenses and other 111,200 79,300 Research tax credits 208,300 208,000 Valuation allowance (128,000 ) (287,300 ) Deferred tax asset – Long Term 396,400 315,100 Deferred tax liability Intangible asset amortization (25,000 ) (30,000 ) Building and leasehold depreciation (360,400 ) (308,000 ) Deferred tax liability – Long Term $ (385,400 ) $ (338,000 )

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Feb. 28, 2018
Equity [Abstract]
Summary of stock options	Weighted Average Stock Options Exercise Price $ Fair Value Outstanding Exercisable Outstanding Exercisable Vested Balance - February 29, 2016 464,100 349,820 $ 0.91 $ 0.83 $ 0.39 Granted 400,000 0.91 Exercised (10,000 ) (0.48 ) Cancelled (14,500 ) (1.21 ) Balance - February 28, 2017 839,600 395,405 $ 0.91 $ 0.89 $ 0.32 Granted 130,000 $ 1.12 Exercised (57,500 ) (0.84 ) Cancelled — — Balance - February 28, 2018 912,100 425,400 $ 0.96 $ 0.92 $ 0.35
Stock option grants	Shares Weighted Average Exercise Price Weighted Average Fair Value Year ended February 28, 2018: Exercise price exceeds market price — — — Exercise price equals market price 130,000 $ 1.12 $ .18 Exercise price is less than market price — — —
Stock options outstanding and exercisable	Weighted Average Number Remaining Life Exercise Number Outstanding in Years Price Exercisable Range of exercise prices: $.42 to $.50 12,500 4.40 $ 0.47 12,500 $.51 to $1.00 533,000 7.32 $ 0.83 186,000 $1.01 to $1.20 341,600 7.42 $ 1.10 214,400 $1.21 to $1.67 25,000 7.82 $ 1.47 12,500 Total Options: 912,100 425,400

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Feb. 28, 2018
Earnings Per Share Tables
Computation of basic and diluted earnings per share	Fiscal Year Ended February 28, 2018 2017 Numerator for basic and diluted earnings per share $ 368,207 $ 95,706 Denominator for basic earnings per share - weighted average 14,968,450 14,961,076 Effects of dilutive securities: Stock options for employees, directors and outside consultants 126,673 57,206 Denominator for diluted earnings per share 15,095,123 15,018,282 Basic Earnings Per Share – Weighted Average $ 0.02 $ 0.01 Diluted Earnings Per Share – Weighted Average $ 0.02 $ 0.01

Other Comprehensive Income (L34

Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Feb. 28, 2018
Other Comprehensive Income Loss Tables
Accumulated Other Comprehensive Gain (Loss)	Unrealized Gain on Beginning Balance February 28, 2017 $ 42,250 Current Period Unrealized Gains 59,355 Ending Balance February 28, 2018 $ 101,605

Significant Customers and For35

Significant Customers and Foreign Sales (Tables)	12 Months Ended
	Feb. 28, 2018
Segment Reporting [Abstract]
Export sales to customers located outside the United States	Fiscal Year Ended February 28, 2018 2017 Latin America $ 1,112,000 $ 1,177,000 Asia Pacific 2,459,000 2,671,000 Europe, Middle East, Asia 2,618,000 1,939,000 Other 114,000 265,000 $ 6,303,000 $ 6,052,000

Significant Accounting Polici36

Significant Accounting Policies (Details Narrative) - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Advertising expense	$ 280,348	$ 285,572
Bad debt expense	$ 0	$ 0
Concentration of Credit Risk	The Company had one customer, which accounted for 8% of sales during fiscal 2018. Two customers accounted for 22% of the outstanding accounts receivables at February 28, 2018	The Company had one customer, which accounted for 7% of sales during fiscal 2017. Six customers accounted for 46% of the outstanding accounts receivables at February 28, 2017.
Marketable securities including mutual funds	$ 4,405,900	$ 2,342,184
Accumulated amortization of patents	$ 149,654	138,777
Annual Amortization Expense of Intangible Assets For the Next Five Years
Annual amortization expense this year		11,000
Annual amortization expense year two		11,000
Annual amortization expense year three		11,000
Annual amortization expense year four		11,000
Annual amortization expense year five		$ 11,000
Domestic Patents
Useful life of intangible assets	17 years
Foreign Patents
Useful life of intangible assets	12 years

Significant Accounting Polici37

Significant Accounting Policies - Fair values of financial assets of the Company (Details) - USD ($)	Feb. 28, 2018	Feb. 28, 2017
Marketable Securities	$ 4,405,900	$ 2,342,184
Quoted Prices in Active Markets (Level 1)
Marketable Securities	$ 4,405,900	$ 2,342,184

Stock-Based Compensation - Weig

Stock-Based Compensation - Weighted-average Black-Scholes assumptions (Details)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Expected life (in years)		4 years
Risk free interest rate		1.16%
Risk free interest rate, minimum	1.79%
Risk free interest rate, maximum	2.32%
Expected volatility		28.02%
Expected volatility, minimum	12.65%
Expected volatility, maximum	22.24%
Expected dividend yield	0.00%	0.00%
Minimum
Expected life (in years)	2 years
Maximum
Expected life (in years)	8 years

Stock Based Compensation (Detai

Stock Based Compensation (Details Narrative) - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Notes to Financial Statements
Additional stock-based compensation expense as a result of applying ASC 718	$ 41,728	$ 47,319

Inventories (Details)

Inventories (Details) - USD ($)	Feb. 28, 2018	Feb. 28, 2017
Inventories Tables
Raw materials	$ 673,969	$ 1,197,506
Finished goods	395,410	369,428
Work in process	489,082	28,460
Total	1,558,461	1,595,394
Less: Allowance	204,378	254,710
Net inventories	$ 1,354,083	$ 1,340,684

Buildings, Equipment, Furnish41

Buildings, Equipment, Furnishings and Leasehold Improvements - Equipment, furnishings and leasehold improvements (Details) - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Equipment, furnishings and leasehold improvements	$ 6,660,049	$ 6,470,804
Less: accumulated decpreciation	4,354,309	3,971,533
Equipment, furnishings and leasehold improvements, net	2,305,740	2,499,271
Depreciation Expense	382,777	429,360
Buildings
Equipment, furnishings and leasehold improvements	2,250,000	2,250,000
Laboratory Equipment
Equipment, furnishings and leasehold improvements	1,082,051	1,012,824
Machinery and Equipment
Equipment, furnishings and leasehold improvements	872,598	858,694
Leasehold improvements
Equipment, furnishings and leasehold improvements	413,529	369,433
Tradeshow and Demonstration Equipment
Equipment, furnishings and leasehold improvements	1,070,860	1,072,425
Furniture and Fixtures
Equipment, furnishings and leasehold improvements	$ 971,011	$ 907,428

Accrued expenses (Details)

Accrued expenses (Details) - USD ($)	Feb. 28, 2018	Feb. 28, 2017
Payables and Accruals [Abstract]
Accrued compensation	$ 362,405	$ 303,711
Estimated warranty costs	64,050	32,700
Accrued commissions	194,934	255,604
Professional fees	64,928	63,462
Other accrued expenses	206,875	213,278
Total accrued expenses	$ 893,192	$ 868,755

Revolving Line of Credit (Detai

Revolving Line of Credit (Details Narrative) - Revolving Line of Credit - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Line of credit description	The Company has a $750,000 revolving line of credit at prime. The line of credit is collateralized by all assets of the Company, except for the land and buildings. The line of credit is payable on demand and must be retired for a 30-day period once annually. If the Company fails to perform the 30-day annual pay down or if the bank elects to terminate the credit line, the bank may at its option convert the outstanding balance to a 36-month term note with payments including interest in 36 equal installments.
Prime rate	4.50%	3.75%
Outstanding balance	$ 0	$ 0
Unused credit line	$ 750,000	$ 750,000

Long-term debt (Details)

Long-term debt (Details) - USD ($)	Feb. 28, 2018	Feb. 28, 2017
Long-term debt	$ 1,026,651	$ 1,176,348
Due within one year	156,119	149,698
Due after one year	870,532	1,026,650
Note payable, bank, collateralized by land and buildings, payable in monthly installments of principal and interest of $16,358 through January 2024. Interest rate 4.15%. 10 year term.
Long-term debt	$ 1,026,651	$ 1,176,348

Long Term Debt - Long-term debt

Long Term Debt - Long-term debt payables (Details) - USD ($)	Feb. 28, 2018	Feb. 28, 2017
Fiscal Year ending February 28,
2,019	$ 156,119
2,020	162,816
2,021	169,716
2,022	177,081
2,023	184,677
Thereafter	176,242
Total	$ 1,026,651	$ 1,176,348

Bank Guarantees (Details Narrat

Bank Guarantees (Details Narrative) - Performance Guarantee - USD ($)	12 Months Ended
	Feb. 28, 2017	Feb. 28, 2018
Cash on deposit with a foreign bank utilized to collateralize guarantees issued by the bank		$ 72,318
Expiration of bank guarantees	The guarantees expire at various dates in 2018.

Income Taxes - Income tax recon

Income Taxes - Income tax reconciliation (Details) - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Income tax (benefit) reconciliation:
Expected federal income tax	$ 156,421	$ 64,165
State tax, net of federal	24,383	10,002
Research and development tax credits	(57,994)	(70,827)
Under (Overaccrual) of prior year state taxes	40,793	(63,351)
Change in recapture tax rate from 39.3% to 27.3%	15,343
Permanent timing difference	33,107	17,795
Change in valuation allowances	(159,300)
Other adjustments	39,103	22,842
Income tax expense (benefit)	$ 91,856	$ (19,374)

Income Taxes - Deferred tax ass

Income Taxes - Deferred tax asset and liability components (Details) - USD ($)	Feb. 28, 2018	Feb. 28, 2017
Deferred tax asset
Inventory	$ 186,800	$ 297,000
Allowance for accounts receivable	18,100	18,100
Accrued expenses and other	111,200	79,300
Research tax credits	208,300	208,000
Valuation allowance	(128,000)	(287,300)
Deferred tax asset - Long Term	396,400	315,100
Deferred tax liability
Intangible asset amortization	(25,000)	(30,000)
Building and leasehold depreciation	(360,400)	(308,000)
Deferred tax liability - Long Term	$ (385,400)	$ (338,000)

Income Taxes (Details Narrative

Income Taxes (Details Narrative) - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Income Tax Disclosure [Abstract]
Federal income tax rate	34.00%
Research and development tax credits	$ 208,300	$ 208,000

Stockholders' Equity - Summary

Stockholders' Equity - Summary of stock options (Details) - $ / shares	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Shares
Outstanding at beginning of period (in shares)	839,600	464,100
Exercisable at beginning of period (in shares)	395,405	349,820
Granted (in shares)	130,000	400,000
Exercised (in shares)	(57,500)	(10,000)
Cancelled (in shares)		(14,500)
Outstanding at end of period (in shares)	912,100	839,600
Exercisable at end of period (in shares)	425,400	395,405
Weighted Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 0.91	$ 0.91
Granted (in dollars per share)	1.12	.91
Exercised (in dollars per share)	(0.84)	(0.48)
Cancelled (in dollars per share)		(1.21)
Outstanding at end of period (in dollars per share)	0.96	0.91
Exercisable at beginning of period (in dollars per share)	0.89	.83
Exercisable at end of period (in dollars per share)	0.92	0.89
Fair value vested at end of period (in dollars per share)	$ 0.35	$ 0.32

Stockholders' Equity - Stock op

Stockholders' Equity - Stock option grants (Details) - $ / shares	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Information, at date of issuance, regarding stock option grants
Weighted Average Exercise Price	$ 1.12	$ .91
Exercise Price Equals Market Price
Information, at date of issuance, regarding stock option grants
Shares	130,000
Weighted Average Exercise Price	$ 1.12
Weighted Average Fair Value	$ 1.18

Stockholders' Equity - Stock 52

Stockholders' Equity - Stock options outstanding and exercisable (Details) - $ / shares	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Number Outstanding	912,100	839,600	464,100
Weighted Average Exercise Price	$ 0.92	$ 0.89	$ .83
Number Exercisable	425,400	395,405	349,820
Stock Options
Number Outstanding	912,100
Number Exercisable	425,400
Stock Options | Exercise Price Range $.42 to $.50
Range of exercise prices, low end (in dollars per share)	$ .42
Range of exercise prices, high end (in dollars per share)	$ .50
Number Outstanding	12,500
Weighted-Average Remaining Life in Years	4 years 4 months 24 days
Weighted Average Exercise Price	$ 0.47
Number Exercisable	12,500
Stock Options | Exercise Price Range $.51 to $1.00
Range of exercise prices, low end (in dollars per share)	$ .51
Range of exercise prices, high end (in dollars per share)	$ 1
Number Outstanding	533,000
Weighted-Average Remaining Life in Years	7 years 3 months 26 days
Weighted Average Exercise Price	$ 0.83
Number Exercisable	186,000
Stock Options | Exercise Price Range $1.01 to $1.20
Range of exercise prices, low end (in dollars per share)	$ 1.01
Range of exercise prices, high end (in dollars per share)	$ 1.20
Number Outstanding	341,600
Weighted-Average Remaining Life in Years	7 years 5 months 1 day
Weighted Average Exercise Price	$ 1.10
Number Exercisable	214,400
Stock Options | Exercise Price Range $1.21 to $1.67
Range of exercise prices, low end (in dollars per share)	$ 1.21
Range of exercise prices, high end (in dollars per share)	$ 1.67
Number Outstanding	25,000
Weighted-Average Remaining Life in Years	7 years 9 months 25 days
Weighted Average Exercise Price	$ 1.47
Number Exercisable	12,500

Stockholders' Equity (Details N

Stockholders' Equity (Details Narrative) - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Stock option exercise price	$ 1.12	$ .91
Iintrinsic value of the Company's options exercised	$ 19,250	$ 1,632
Aggregate intrinsic value of the Company's outstanding options	$ 233,776	$ 226,601
Fiscal Year 2018 Grant to an Officer
Stock option shares granted	110,000
Stock option exercise price	$ 1.06
Fiscal Year 2018 Grant to Employees
Stock option shares granted	20,000
Fiscal Year 2018 Grant to Employees | Minimum
Stock option exercise price	$ 1.15
Fiscal Year 2018 Grant to Employees | Maximum
Stock option exercise price	$ 1.67
Fiscal Year 2017 Grant to Officers
Stock option shares granted	400,000
Fiscal Year 2017 Grant to Officers | Maximum
Stock option exercise price	$ 0.91
2013 Stock Incentive Plan
Stock options shares available for purchase	2,500,000
Stock options outstanding	744,100
Description of option prices	Under the 2013 Stock Incentive Plan, option prices must be at least 100% of the fair market value of the common stock at time of grant. For qualified employees, except under certain circumstances specified in the plan or unless otherwise specified at the discretion of the Board of Directors, no option may be exercised prior to one year after date of grant, with the balance becoming exercisable in cumulative installments over a three year period during the term of the option, and terminating at a stipulated period of time after an employee's termination of employment.
2003 Stock Incentive Plan
Stock options shares available for purchase	1,500,000
Stock options outstanding	168,000

Earnings Per Share - The denomi

Earnings Per Share - The denominator for the calculation of diluted earnings per share (Details) - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Earnings Per Share Tables
Numerator for basic and diluted earnings per share	$ 368,207	$ 95,706
Denominator for basic earnings per share - weighted average	14,968,450	14,961,076
Effects of dilutive securities:
Stock options for employees, directors and outside consultants	126,673	57,206
Denominator for diluted earnings per share	15,095,123	15,018,282
Basic Earnings Per Share - Weighted Average	$ 0.02	$ 0.01
Diluted Earnings Per Share - Weighted Average	$ 0.02	$ 0.01

Other Comprehensive Income (L55

Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Gain (Loss) (Details) - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Other Comprehensive Income Loss - Accumulated Other Comprehensive Gain Loss Details
Beginning Balance February 28, 2017	$ 42,250
Current Period Unrealized Gains	59,000	$ 112,000
Ending Balance February 28, 2018	$ 101,605	$ 42,250

Other Comprehensive Income (L56

Other Comprehensive Income (Loss) (Details Narrative) - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Other Comprehensive Income Loss Details Narrative
Unrealized gain on available-for-sale marketable securities, balance	$ 101,605	$ 42,250
Unrealized gain on available-for-sale securities, during period	$ 59,000	$ 112,000

Other Income (Details Narrative

Other Income (Details Narrative) - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Net rental revenue	$ 368,207	$ 95,706
Other Income
Rental revenue	77,800	89,000
Rental expenses	58,900	59,000
Net rental revenue	$ 18,900	30,000
Life insurance payout		$ 200,000

Significant Customers and For58

Significant Customers and Foreign Sales - Export sales to customers located outside the United States (Details) - USD ($)	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Export sales to customers located outside the United States
Total sales	$ 6,303,000	$ 6,052,000
Significant customers and foreign sales
Percent of total revenues	57.00%	63.00%
One Customer
Significant customers and foreign sales
Percent of total revenues	8.00%
Latin America
Export sales to customers located outside the United States
Total sales	$ 1,112,000	$ 1,177,000
Asia Pacific
Export sales to customers located outside the United States
Total sales	2,459,000	2,671,000
Europe, Middle East, Asia
Export sales to customers located outside the United States
Total sales	2,618,000	1,939,000
Other
Export sales to customers located outside the United States
Total sales	$ 114,000	$ 265,000