1 EXHIBIT 10.4(f) When recorded, mail to: STREICH-LANG, P.A. Renaissance One Two North Central Avenue Phoenix, Arizona 85004-2391 Attn: Matthew Mehr, Esq. MODIFICATION OF MORTGAGE (Indiana) DATE: March 28, 1997 DESCRIPTION OF MORTGAGE (the "Mortgage"): PARTIES: Mortgagor: BOWMAR INSTRUMENT CORPORATION, an Indiana corporation Mortgagor 5080 North 40th Street, Suite 475 Address: Phoenix, Arizona 85018 Attention: Joseph G. Warren, Jr. Bank: BANK ONE, ARIZONA, NA, a national banking association. Bank Post Office Box 71 Address: Phoenix, Arizona 85001 Attention: Commercial Banking A593 RECORDING DATA: Mortgage, Security Agreement, Assignment of Rents and Fixture Filing dated August 28, 1995, by Mortgagor in favor of Bank, recorded November 17, 1995, in Instrument Number 95-053967, official records of Allen County, Indiana. FOR VALUE RECEIVED, IT IS AGREED AS FOLLOWS: 1. The promissory notes and other indebtedness secured by the Mortgage has been modified by that certain Third Modification Agreement of even date herewith between Mortgagor and Bank (the "Third Modification Agreement"). In addition, pursuant to the Third Modification Agreement, Bank has agreed to provide Mortgagor with an additional revolving line of credit/term loan in the principal amount of $1,200,000.00 (the "RLT") secured by, among other things, the 2 Mortgage. In connection with the modification of such indebtedness and the extension of such additional credit, the Mortgage is hereby modified as provided in this Modification. 2. The Mortgage is hereby amended to secure, in addition to the indebtedness and obligations of Mortgagor described therein, the obligation of Mortgagor to repay all advances made by the Bank to the Mortgagor under the RLT. Hereinafter, the term "Obligations," as defined in the Mortgage, shall include, in addition to the other indebtedness described in the Mortgage, the RLT. The final maturity date of the RLT is March 31, 2002. 3. This Modification shall not affect or impair the lien or priority of the Mortgage, as amended, with respect to the property subjected to the Mortgage. 4. All terms and provisions of the Mortgage shall remain in full force and effect except as specifically modified herein and in the Third Modification Agreement. 5. This Modification may be executed in counterparts, all of which executed counterparts shall together constitute a single document. Signature pages may be detached from the counterparts and attached to a single copy of this Modification to physically form one document. IN WITNESS WHEREOF, these presents have been executed as of the date first written above. BOWMAR INSTRUMENT CORPORATION, an Indiana corporation By: /s/ Joseph G. Warren, Jr. ------------------------- Name: Joseph G. Warren, Jr. ------------------------- Title: Vice President ------------------------- MORTGAGOR BANK ONE, ARIZONA, NA, a national banking association By: /s/ Michael V. McCann ------------------------- Name: Michael V. McCann ------------------------- Title: Vice President ------------------------- BANK -2- 3 STATE OF ARIZONA ) )ss: County of Maricopa ) Before me, a Notary Public in and for the above County and State, personally appeared Joseph G. Warren, Jr., the Vice President, of BOWMAR INSTRUMENT CORPORATION, an Indiana corporation, who as such officer acknowledged the execution of the foregoing Modification of Mortgage for and on behalf of the corporation. WITNESS my hand and Notarial seal this 1st day of April, 1997. Signature: /s/ Cheryl A. Curtis --------------------- Printed: Cheryl A. Curtis --------------------- Notary Public "OFFICIAL SEAL" [SEAL] Cheryl A. Curtis My Commission Expires: Notary Public - Arizona Maricopa County My County of Residence: My Commission Expires 3/3/2000 -3- 4 STATE OF ARIZONA ) )ss: County of Maricopa ) Before me, a Notary Public in and for the above County and State, personally appeared Michael V. McCann, the Vice President, of BANK ONE, ARIZONA, NA, a national banking association, who as such officer acknowledged the execution of the foregoing Modification of Mortgage for and on behalf of the association. WITNESS my hand and Notarial seal this 10th day of April, 1997. Signature: /s/ Joy L. Peckham ------------------------------ Printed: Joy L. Peckham ------------------------------ Notary Public "OFFICIAL SEAL" My Commission Expires: 2/27/99 Joy L. Peckham ------- [SEAL] Notary Public-Arizona Maricopa County My County of Residence: Maricopa My Commission Expires Feb. 27, 1999 -------- THIS INSTRUMENT PREPARED BY: /s/ ------------------------------------------------- Attorney-at-law Streich Lang Renaissance One Two North Central Avenue Phoenix, Arizona 85004-2391 Telephone: (602) 229-5200 -4-