ESCO TECHNOLOGIES

For more information contact:                              For media inquiries:
Patricia K. Moore                                               David P. Garino
Director, Investor Relations                                     (314) 982-0551
ESCO Technologies Inc.
(314) 213-7277

                      ESCO ANNOUNCES SECOND QUARTER RESULTS


     St. Louis,  MO, May 10, 2005 - ESCO  Technologies  Inc.  (NYSE:  ESE) today
announced  its results for the fiscal 2005 second  quarter ended March 31, 2005.

     Net earnings  for the fiscal 2005 second  quarter  were $10.4  million,  or
$0.80 per share compared to net earnings of $5.4 million,  or $0.40 per share in
the second  quarter of fiscal 2004.  The prior  year's  second  quarter  results
included a net loss from discontinued  operations of ($2.2) million,  or ($0.17)
per share,  and the  after-tax  charges  related to the exit and shutdown of the
Puerto Rican facility of ($0.5) million,  or ($0.03) per share.  Excluding these
items,  prior year second quarter  "Operational"  earnings as defined in earlier
releases were $8.1 million, or $0.60 per share.

     Net earnings for the first six months of fiscal 2005 were $20.9 million, or
$1.60 per share  compared to net earnings of $11.5  million,  or $0.87 per share
for the first six months of fiscal 2004.  The prior year results  included a net
loss from discontinued  operations of ($2.6) million,  or ($0.19) per share, and
the  after-tax  charges  related to the exit and  shutdown  of the Puerto  Rican
facility of ($1.0) million,  or ($0.08) per share.  Excluding these items, prior
year first six months "Operational" earnings as defined in earlier releases were
$15.2 million, or $1.14 per share.

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     Add One A  reconciliation  of the prior  year  GAAP  reported  earnings  to
"Operational" earnings is included in the Exhibits attached to this release. The
Company  believes that the  presentation of fiscal 2004  "Operational"  earnings
provides  meaningful  additional insight into the Company's  performance.

Sales

     Fiscal 2005 second  quarter sales of $106.2  million were $4.0 million,  or
4 percent  higher than 2004 second quarter sales of $102.2 million.  Fiscal 2005
year-to-date  sales of $210.5  million were $12.0  million,  or 6 percent higher
than 2004  year-to-date  sales of $198.6  million.  Favorable  foreign  currency
values  resulted in  approximately  $0.8  million and $2.4  million of the sales
increases  realized  in  the  2005  second  quarter  and  year-to-date  periods,
respectively.

     On a segment basis for the fiscal 2005 second quarter, Communications sales
increased 19 percent;  Filtration / Fluid Flow ("Filtration")  sales decreased 3
percent;  and Test  sales  decreased  2 percent  as  compared  to the prior year
period.  Year-to-date,  fiscal 2005  Communications  sales increased 13 percent;
Filtration  sales  increased  4 percent;  and Test sales  increased 2 percent as
compared to the first six months of fiscal 2004.

     Communications segment sales increased in the second quarter as a result of
higher  shipments of  Comtrak's  SecurVision  video  security  products,  which
generated  $3.5 million in sales  during the second  quarter of 2005 versus $0.4
million of sales in the 2004 second quarter.  Year-to-date  sales of SecurVision
products  were $10.6  million in 2005 as compared to $0.9 million in 2004.

     Also within the  Communications  segment,  sales of DCSI's  Automatic Meter
Reading (AMR) equipment to electric utility  customers were $32.6 million in the
2005 second quarter  compared to $29.9 million in the prior year second quarter.
Sales to PPL Electric Utilities  Corporation (PPL) decreased  approximately $7.0
million in the  current-year's  second quarter compared to the second quarter of
fiscal 2004 due to the completion of the PPL contract. Sales

                                    - more -


Add Two

to PPL were $0.4 million and $7.4 million in the second  quarters of fiscal 2005
and 2004,  respectively.  DCSI's sales to electric utility cooperative customers
(COOP) and customers  other than PPL increased 43 percent during the 2005 second
quarter to $32.2 million, from $22.5 million in the prior year second quarter.

     Filtration segment sales decreased during the second quarter of fiscal 2005
primarily  as a result  of lower  defense  spares  shipments  at VACCO and lower
automotive  shipments at Filtertek.  These  decreases were  partially  offset by
higher  shipments  of  commercial  and  military   aerospace  products  at  PTI.
Year-to-date, Filtration segment sales increased due to the additional volume of
commercial and military aerospace products at PTI.

     Test segment sales decreased slightly during the second quarter of 2005 due
to higher sales realized in 2004 at the Company's  European  operations from two
large chamber projects. In addition, current-year sales were lower-than-expected
due to the timing of the completion of a test chamber  installation in Japan and
certain government  shielding  projects,  which were completed in April 2005 and
will be recognized in the fiscal 2005 third quarter. These second quarter timing
items  were  partially  offset  by  significantly   higher   components   sales.
Year-to-date,  the sales  increase  was the result of  additional  test  chamber
installations, component sales, and government shielding projects.

Earnings Before Interest and Taxes(EBIT)
- ----------------------------------------

     On a segment  basis,  items that impacted EBIT as a percent of sales ("EBIT
margin") during the second quarter of fiscal 2005 included the following.

 In the
Communications  segment, EBIT margin for the 2005 second quarter was higher than
the  prior  year  period  due  to  the  significant  increase  in  shipments  of
SecurVision  products.  The 2005 second quarter EBIT margin was also  positively
impacted by the favorable  sales mix of AMR products  resulting from  additional
sales to the COOP market and cost reductions realized on certain  components.

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Add Three

     In the  Filtration  segment,  EBIT margin  improved  during the 2005 second
quarter and year-to-date  periods primarily due to higher aerospace sales at PTI
and improved operating  efficiencies realized at Filtertek subsequent to exiting
the Puerto Rican facility. In addition, Filtertek's current-year EBIT margin was
favorably  impacted  by $0.3  million in the  second  quarter  and $0.9  million
year-to-date  as a result of a cost  reimbursement  realized at Filtertek from a
medical device customer  related to a shortfall in their actual purchases versus
the minimum contractually  guaranteed amount. During the second quarter of 2005,
Filtertek  signed an  agreement  to license  certain of its  patents  related to
Needle-Free  Connectors to a third party for $1.5 million in cash and recognized
$0.2 million of profit  related to this  transaction.  These  improvements  were
partially  offset by lower margins realized during the second quarter of 2005 at
VACCO resulting from the decreased sales of defense spares.  The prior year EBIT
margin in the Filtration  segment was  negatively  impacted by the exit and move
costs incurred and the  inefficiencies  being  absorbed at Filtertek  during the
first six months of fiscal 2004 as a result of operating in both the Puerto Rico
and Juarez facilities.

     In the Test segment,  EBIT margin was higher in the second  quarter of 2005
due to the favorable  changes in sales mix resulting from  additional  component
sales, but was lower in the current year-to-date period primarily as a result of
approximately  $0.3 million in  installation  cost overruns  incurred during the
first  quarter  of  fiscal  2005 on  government-shielding  projects  located  in
particularly volatile areas of the world, and higher costs of steel and copper.

     The  Corporate  office  operating  expenses  were  comparable in the second
quarters of fiscal 2005 and 2004, respectively.  EBIT from continuing operations
for the prior year periods was affected by certain  charges  which are presented
in detail in the financial Exhibits attached at the end of this release.

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Add Four

     In the second quarter and  year-to-date  periods of fiscal 2004, the pretax
charges in  continuing  operations  related to these items were $0.6 million and
$1.3 million, respectively.  These items are included in "Earnings before income
taxes" in the Exhibits.

New Orders
- ----------

     New orders  received  during  fiscal  2005 were  $113.8  million and $215.4
million for the second quarter and six-month periods,  resulting in a backlog of
$253.9  million  at  March  31,  2005.   New  orders   received  in  Filtration,
Communications and Test were $60.5 million,  $27.4 million, and $25.9 million in
the 2005  second  quarter,  respectively.  Year-to-date,  fiscal 2005 new orders
received  in  Filtration,  Communications  and Test were  $99.8  million,  $62.7
million, and $53.0 million, respectively.

     The Filtration amounts noted above include the orders for anti-icing valves
for the T-700 engine  utilized on numerous  airframes  including  the  Blackhawk
Helicopter,  and for quiet valves and manifold  assemblies  used on the Virginia
Class  Submarine.   Both  orders  were  multi-year  follow-on  awards  and  were
previously discussed in the February 4, 2005, Earnings Release.

Cash Flow
- ---------

     The Company  generated  $12.2  million and $24.5  million of free cash flow
during the  second  quarter  and  year-to-date  periods  ended  March 31,  2005,
respectively.  Free cash flow is  defined  as "Net Cash  Provided  by  Operating
Activities" less "Capital Expenditures." For a reconciliation of free cash flow,
see the Exhibits attached to this release.

Stock Repurchase Program
- ------------------------

     No shares were  repurchased  during the second  quarter of fiscal 2005. The
Company  spent  $24.9  million  during  the  first  quarter  of  fiscal  2005 to
repurchase  335,000  shares of its  outstanding  stock under its existing  stock
repurchase  program. As of March 31, 2005,  approximately  575,000 shares remain
available for repurchase by the Company under the current program, which expires
September 30, 2006.

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Add Five

Chairman's Commentary
- ---------------------

     Vic Richey,  Chairman and Chief Executive Officer,  commented,  "Our fiscal
2005 second  quarter  revenues were at the low end of our internal  expectations
largely as a result of the  well-publicized  weakness in the automotive  sector,
which  impacted our sales of fuel and  transmission  filters.  Despite the lower
automotive  related revenues,  our second quarter earnings per share were at the
high  end  of  our  previous  guidance,   primarily  resulting  from  mix-driven
improvements  in our Test  segment  and  higher-than-anticipated  sales of video
security products."

     Mr.  Richey  continued,  "While  our  full  year  outlook  has not  changed
significantly,  as a result of the strength of our second quarter  results,  and
given the additional visibility we have at mid-year,  our full year EPS guidance
is being raised and the range tightened.  Our current  expectations are for full
year EPS in the range of $3.10 to $3.20 per share,  versus our previous guidance
of $2.95 to $3.15 per share.

     "While  we  are  taking  nothing  for  granted,   I  believe  we  are  very
well-positioned  to deliver our 2005 numbers.  The bulk of our attention at this
point is directed  at  capturing  opportunities  and  successfully  implementing
near-term initiatives which will support continued profitable growth in 2006 and
beyond.

     "In  Filtration,  we have several niche  opportunities  for growth and more
substantial opportunities for margin expansion through additional utilization of
our  manufacturing  locations in Mexico and Brazil,  as well as through material
cost reductions. We are actively working initiatives in each of these areas.

     "In Communications,  we are currently  experiencing a significantly  higher
level of proposal activity for investor-owned utilities. We are focused not only
on delivering best value solutions for the opportunities in process, but also on
enhancing and expanding our product offering  through both internal  development
and acquisitions.  In the AMR space, we continue to actively pursue acquisitions
but progress to date has been limited. I believe this is, in part,

                                    - more -

Add Six

because the potential  sellers may be reluctant to act until they understand the
outcome of the significant,  pending  opportunities.  With or without  near-term
acquisitions,  we  continue to have very  substantial  long-term  prospects  for
growth within the AMR market.

     "From an opportunities standpoint, the Test business fits somewhere between
Filtration  and  Communications.  While  there are size  limitations  within our
served  market,  we continue to capitalize on our strong market  position and to
expand the foothold we have  established in Asia. On the cost side, we have made
substantial  progress on a near-term initiative to reduce our material costs. We
are also working on  acquisitions  which would  increase our product  content on
significant test and shielding projects.

     "I  continue  to  believe  our  shareholders  will  be  well-served  by the
combination  of our  growth  opportunities  and  initiatives  and our end market
diversification."

Fiscal 2005 Business Outlook
- ----------------------------

     Statements contained in the preceding and following paragraphs are based on
current expectations. Statements that are not strictly historical are considered
forward-looking, and actual results may differ materially.

     The fiscal  2005  Business  Outlook  described  below does not  include the
impact of potential  acquisitions,  or the impact of any significant orders from
new investor-owned utility customers that may be entered into during the balance
of the fiscal year.

Revenues
- --------

     Management   currently  expects  fiscal  2005  year-over-year   revenue  in
Filtration to be  essentially  flat due to continued  weakness in the automotive
sector, which is down from the previous expectation of sales growth in the range
of 2 to 5 percent.  In Test,  Management  now expects  revenue growth of 8 to 10
percent,  an  increase  from  the  previous  guidance  of  4 to  8  percent.  In
Communications, Management continues to expect revenue to be flat to down 3

                                    - more -





Add Seven

percent.  The  expected  flatness  in  Communications  is due to the fiscal 2004
wind-down of the PPL contract that  generated  $21.6  million in sales,  and the
Idaho Power phase one and Bangor Hydro  contracts that generated  combined sales
of approximately $8.5 million in fiscal 2004.

EBIT Margin
- -----------

     Management  expects EBIT margins to be in the following  ranges,  which are
consistent with previous guidance:  Filtration margins should be in the range of
13 to 15 percent;  Test margins  should be in the range of 9 to 11 percent;  and
Communications margins should be in the range of 27 to 29 percent.

     Corporate operating expenses are expected to be consistent with fiscal 2004
amounts.

Earnings Per Share
- ------------------

     Management  currently estimates fiscal 2005 EPS to be in the range of $3.10
to $3.20 per share,  which is increased  from the previous  guidance of $2.95 to
$3.15 per share. The current expectations on a quarterly basis for the remainder
of 2005 are that the fourth  quarter EPS will be higher  than the third  quarter
EPS as a result of a more favorable sales mix.

     The effective tax rate for fiscal 2005 is expected to be approximately 37.5
percent, a slight improvement from the previous expectation of 38 percent.

Conference Call
- ---------------

     The  Company  will host a  conference  call  today,  May 10, at 9:30  a.m.,
Central Time, to discuss the Company's second quarter operating  results. A live
audio   webcast   will   be   available   on   the   Company's   Web   site   at
www.escotechnologies.com.  Please  access the Web site at least 15 minutes prior
to the call to register, download and install any necessary audio software.

     A replay of the  conference  call will be  available  for seven days on the
Company's  website  noted above or by phone (dial  1-888-203-1112  and enter the
pass code 1523374).

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Add Eight

Forward-Looking Statements
- --------------------------

     Statements in this press release regarding future revenues and the level of
revenue  contributions  from each  segment,  potential  acquisitions,  potential
customer  contracts,  growth in the AMR market,  the  success of cost  reduction
efforts, fiscal 2005 corporate operating expenses, the fiscal 2005 effective tax
rate,  future  fiscal 2005  results,  earnings,  fiscal 2006 and beyond  revenue
growth, EBIT margins,  EPS, long term success of the Company,  and other written
or oral  statements  which are not  strictly  historical  are  "forward-looking"
statements  within the  meaning of the safe  harbor  provisions  of the  federal
securities  laws.   Investors  are  cautioned  that  such  statements  are  only
predictions  and  speak  only as of the date of this  release,  and the  Company
undertakes  no duty to update.  The Company's  actual  results in the future may
differ materially from those projected in the forward-looking  statements due to
risks and  uncertainties  that exist in the  Company's  operations  and business
environment  including,  but not limited to: weakening of economic conditions in
served  markets;   changes  in  customer   demands  or  customer   insolvencies;
competition;   intellectual  property  rights;   technical   difficulties;   the
availability of selected  acquisitions;  unforeseen charges impacting  corporate
operating expenses; the performance of the Company's  international  operations;
successful  execution of the planned sale of the Company's Puerto Rico facility;
material changes in the costs of certain raw materials  including steel,  copper
and  petroleum   based  resins;   delivery  delays  or  defaults  by  customers;
termination  for  convenience  of customer  contracts;  timing and  magnitude of
future contract  awards;  performance  issues with key customers,  suppliers and
subcontractors;  collective  bargaining and labor disputes;  changes in laws and
regulations including changes in accounting standards and taxation requirements;
changes in foreign or U.S.  business  conditions  affecting the  distribution of
foreign   earnings;   costs  relating  to  environmental   matters;   litigation
uncertainty; and the Company's successful execution of internal operating plans.

                                    - more -


Add Nine

     ESCO,  headquartered  in St.  Louis,  is a leading  supplier of  engineered
filtration  products  to the  process,  health care and  transportation  markets
worldwide.  In  addition,  the  Company  markets  proprietary,  special  purpose
communications  systems and is the industry  leader in RF shielding and EMC test
products.

                               - tables attached -






Add Ten

                     ESCO Technologies Inc. and Subsidiaries
           Condensed Consolidated Statements of Operations (Unaudited)
                (Dollars in thousands, except per share amounts)

                                     Three Months Ended
                                     ------------------
                                       March 31, 2005
                                       --------------


    Net Sales                             $ 106,160
    Cost and Expenses:
      Cost of sales                          68,989
      SG&A                                   21,269
      Interest (income) expense, net           (303)
      Other (income) expenses, net             (236)
                                               ----
        Total costs and expenses             89,719
                                             ------

    Earnings before income taxes             16,441
    Income taxes                              6,014
                                              -----

      Net earnings                        $  10,427
                                          =========


    Earnings per share:
      Basic
        Net earnings                      $    0.83
                                          =========

      Diluted
        Net earnings                      $    0.80
                                          =========


    Average common shares O/S:
      Basic                                  12,633
                                             ======
      Diluted                                13,017
                                             ======



                                    - more -





Add Eleven

                     ESCO Technologies Inc. and Subsidiaries
           Condensed Consolidated Statements of Operations (Unaudited)
                (Dollars in thousands, except per share amounts)

                                Three Months Ended March 31, 2004
                                ---------------------------------

                                                            (1)
                                   GAAP        Adj.    "Operational"
                                   ----        ----    -------------

Net Sales                        $102,171                 102,171
Cost and Expenses:
  Cost of sales                    70,781                  70,781
  SG&A                             19,111      (176) (2)   18,935
  Interest (income) expense, net     (483)                   (483)
  Other (income) expenses, net        513      (468) (3)       45
                                      ---      ----            --
     Total costs and expenses      89,922      (644)       89,278
                                   ------      ----        ------

Earnings before income taxes       12,249       644        12,893
Income taxes                        4,684       155  (4)    4,839
                                    -----       ---         -----

  Net earnings from
   continuing operations            7,565       489         8,054

Loss from discontinued
  operations, net of tax           (2,200)    2,200  (5)       --
                                   ------     -----  --

  Net earnings (loss)            $  5,365     2,689         8,054
                                 ========     =====         =====

Earnings (loss) per share:
  Basic
    Net earnings from
     continuing operations       $   0.59                    0.63
    Net loss from
     discontinued operations        (0.17)                   0.00
                                    -----                    ----
    Net earnings                 $   0.42                    0.63
                                 ========                    ====


  Diluted
    Net earnings from
     continuing operations       $   0.57                    0.60
    Net loss from
     discontinued operations        (0.17)                   0.00
                                    -----                    ----
    Net earnings                 $   0.40                    0.60
                                 ========                    ====

Average common shares O/S:
  Basic                            12,874                  12,874
                                   ======                  ======
  Diluted                          13,325                  13,325
                                   ======                  ======

 (1) Represents results on an adjusted basis, after removing the
     items described below in (2)-(4).
 (2) Represents severance charges related to the exit of the Puerto
     Rico facility.
 (3) Represents shutdown costs related to the exit of the Puerto
     Rico facility.
 (4) Represents the tax impact of items described above in (2)-(3).
 (5) Relates to the Microfiltration and Separations businesses
     which are classified as "discontinued operations."

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Add Twelve
                     ESCO Technologies Inc. and Subsidiaries
           Condensed Consolidated Statements of Operations (Unaudited)
                (Dollars in thousands, except per share amounts)

                                      Six Months Ended
                                      ----------------
                                       March 31, 2005
                                       --------------



    Net Sales                             $ 210,535
    Cost and Expenses:
      Cost of sales                         137,498
      SG&A                                   41,082
      Interest (income) expense, net           (783)
      Other (income) expenses, net             (690)
                                               ----
        Total costs and expenses            177,107
                                            -------

    Earnings before income taxes             33,428
    Income taxes                             12,479
                                             ------

      Net earnings                        $  20,949
                                          =========

    Earnings per share:
      Basic
        Net earnings                      $    1.65
                                          =========

      Diluted
        Net earnings                      $    1.60
                                          =========

    Average common shares O/S:
      Basic                                  12,722
                                             ======
      Diluted                                13,118
                                             ======


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Add Thirteen

                     ESCO Technologies Inc. and Subsidiaries
           Condensed Consolidated Statements of Operations (Unaudited)
                (Dollars in thousands, except per share amounts)

                                  Six Months Ended March 31, 2004
                                  -------------------------------

                                                            (1)
                                   GAAP        Adj.    "Operational"
                                   ----        ----    -------------

Net Sales                        $198,567                 198,567
Cost and Expenses:
  Cost of sales                   137,051                 137,051
  SG&A                             37,880      (470) (2)   37,410
  Interest (income) expense, net     (519)                   (519)
  Other (income) expenses, net      1,127      (860) (3)      267
                                    -----      ----  --       ---
     Total costs and expenses     175,539    (1,330)      174,209
                                  -------    ------       -------

Earnings before income taxes       23,028     1,330        24,358
Income taxes                        8,875       305  (4)    9,180
                                    -----       ---  --     -----

  Net earnings from
   continuing operations           14,153     1,025        15,178

Loss from discontinued
  operations, net of tax           (2,637)    2,637  (5)       --
                                   ------     -----  --

  Net earnings (loss)            $ 11,516     3,662        15,178
                                 ========     =====        ======

Earnings (loss) per share:
  Basic
    Net earnings from
     continuing operations       $   1.10                    1.18
    Net loss from
     discontinued operations        (0.20)                   0.00
                                    -----                    ----
    Net earnings                 $   0.90                    1.18
                                 ========                    ====

  Diluted
    Net earnings from
     continuing operations       $   1.06                    1.14
    Net loss from
     discontinued operations        (0.19)                   0.00
                                    -----                    ----
    Net earnings                 $   0.87                    1.14
                                 ========                    ====

Average common shares O/S:
  Basic                            12,857                  12,857
                                   ======                  ======
  Diluted                          13,305                  13,305
                                   ======                  ======

 (1) Represents results on an adjusted basis, after removing the
     items described below in (2)-(4).
 (2) Represents severance charges related to the exit of the Puerto
     Rico facility.
 (3) Represents shutdown costs related to the exit of the Puerto
     Rico facility.
 (4) Represents the tax impact of items described above in (2)-(3).
 (5) Relates to the Microfiltration and Separations businesses
     which are classified as "discontinued operations."

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Add Fourteen

                     ESCO TECHNOLOGIES INC. AND SUBSIDIARIES
                     Condensed Business Segment Information
                                   (Unaudited)
                              (Dollars in millions)

                         Three Months Ended         Six Months Ended
                              March 31,               March 31,
                              ---------               ---------
                          2005         2004        2005        2004
                          ----         ----        ----        ----

Net Sales-GAAP

  Filtration             $ 41.0        42.2        85.0        82.1
  Communications           36.1        30.4        69.6        61.8
  Test                     29.1        29.6        55.9        54.7
                           ----        ----        ----        ----
    Totals               $106.2       102.2       210.5       198.6
                         ======       =====       =====       =====

EBIT-GAAP basis (1)
  Filtration             $  5.0         4.2  (2)   12.1         7.7  (2)
  Communications           10.6         7.2        20.3        14.6
  Test                      3.3         3.3         5.4         5.5
  Corporate                (2.8)       (2.9)       (5.2)       (5.3)
                           ----        ----        ----        ----
    Totals               $ 16.1        11.8        32.6        22.5
                         ======        ====        ====        ====

    Note: Prior year amounts presented above exclude the operations
          of the MicroSep businesses, which are classified as
          "discontinued operations."  Depreciation and amortization
          expense for continuing operations was $3.0 million and
          $3.1 million for the fiscal quarters ended March 31, 2005
          and 2004, respectively, and $6.1 million and $5.9 million
          for the six-month periods ended March 31, 2005 and 2004,
          respectively.

    (1) EBIT is defined as earnings from continuing operations before
        interest and taxes.
    (2) The reconciliation to Operational Revenue/EBIT for the Filtration
        segment is below:

                                      Q2 FY 04            YTD FY 04
                                      --------            ---------
                                 Net Sales    EBIT    Net Sales    EBIT
                                 ---------    ----    ---------    ----
    Filtration Segment - GAAP      $42.2      $4.2      $82.1      $7.7
    Add: Puerto Rico facility
      exit costs                      --       0.6         --       1.3
                                   -----       ---      -----       ---
    Filtration Segment-
      "Operational"                $42.2      $4.8      $82.1      $9.0
                                   =====      ====      =====      ====


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Add Fifteen

                     ESCO TECHNOLOGIES INC. AND SUBSIDIARIES
                  Reconciliation of Non-GAAP Financial Measures
                                   (Unaudited)
                              (Dollars in millions)

    EBIT (1) - As Reported

                             Three Months Ended      Six Months Ended
                                 March 31,               March 31,
                                 ---------               ---------
                              2005        2004        2005       2004
                              ----        ----        ----       ----

EBIT                         $16.1       $11.8       $32.6      $22.5
Interest income                0.3         0.5         0.8        0.5
Less: Income taxes             6.0         4.7        12.5        8.8
                               ---         ---        ----        ---
Net earnings from
  continuing operations      $10.4       $ 7.6       $20.9      $14.2
                             =====       =====       =====      =====


    (1) EBIT is defined as earnings from continuing operations before
        interest and taxes. Excludes the operations of the MicroSep
        businesses, which are classified as "discontinued operations"
        in fiscal 2004.


                                    - more -





Add Sixteen


                     ESCO TECHNOLOGIES INC. AND SUBSIDIARIES
                Condensed Consolidated Balance Sheets (Unaudited)
                             (Dollars in thousands)


                                          March 31,     September 30,
                                            2005             2004
                                            ----             ----

Assets
  Cash and cash equivalents              $ 74,567         $ 72,281
  Accounts receivable, net                 72,624           77,729
  Costs and estimated earnings
    on long-term contracts                  2,680            2,476
  Inventories                              49,498           44,287
  Current portion of deferred
    tax assets                             21,057           27,810
  Other current assets                      8,933            8,947
                                            -----            -----
    Total current assets                  229,359          233,530

  Property, plant and equipment, net       68,919           69,103
  Goodwill                                 69,215           68,949
  Deferred tax assets                       6,809           10,055
  Other assets                             23,051           20,803
                                           ------           ------
                                         $397,353         $402,440
                                         ========         ========


Liabilities and Shareholders' Equity
  Short-term borrowings and current
   maturities of long-term debt          $     79              151
  Other current liabilities                60,211           68,171
                                           ------           ------
      Total current liabilities            60,290           68,322
  Deferred income                           2,509            2,738
  Other liabilities                        24,475           23,396
  Long-term debt                              386              368
  Shareholders' equity                    309,693          307,616
                                          -------          -------
                                         $397,353         $402,440
                                         ========         ========


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Add Seventeen


                     ESCO TECHNOLOGIES INC. AND SUBSIDIARIES
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (Unaudited)
                             (Dollars in thousands)

                                                     Six Months Ended
                                                      March 31, 2005
                                                      --------------
Cash flows from operating activities:
  Net earnings                                          $ 20,949
  Adjustments to reconcile net earnings to net
    cash provided by operating activities:
    Depreciation and amortization                          6,080
    Changes in operating working capital                  (1,504)
    Effect of deferred taxes                               3,246
    Other                                                    337
                                                             ---
      Net cash provided by operating activities           29,108

Cash flows from investing activities:
  Capital expenditures                                    (4,568)
                                                          ------
    Net cash used by investing activities                 (4,568)
                                                          ------

Cash flows from financing activities:
  Principal payments on long-term debt                       (81)
  Purchases of common stock into treasury                (24,928)
  Other, including exercise of stock options               2,755
                                                           -----
    Net cash used by financing activities                (22,254)
                                                         -------
  Net increase in cash and cash equivalents                2,286
  Cash and cash equivalents, beginning of period          72,281
                                                          ------
  Cash and cash equivalents, end of period              $ 74,567
                                                        ========


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Add Eighteen

                     ESCO Technologies Inc. and Subsidiaries
         Reconciliation of Free Cash Flow - YTD FY 2005 - March 31, 2005
                             (Dollars in thousands)


                                                     Total
                                                     -----

    Net cash provided by operating activities      $ 29,108

    Less: Capital expenditures                       (4,568)
                                                     ------

    Free cash flow                                 $ 24,540
                                                   ========

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Add Nineteen

                                      ESCO TECHNOLOGIES INC. AND SUBSIDIARIES
                                           Other Selected Financial Data
                                                    (Unaudited)
                                              (Dollars in thousands)

Backlog And Entered
- -------------------
Orders-Q2 FY 2005          Filtration   Comm.      Test      Total
- -----------------          ----------   -----      ----      -----
  Beginning Backlog-
   12/31/04                $  72,961   110,436    62,956    246,353
  Entered Orders              60,537    27,355    25,860    113,752
  Sales                      (40,975)  (36,085)  (29,100)  (106,160)
                             -------   -------   -------   --------
  Ending Backlog-
   3/31/05                 $  92,523   101,706    59,716    253,945
   = == ==                 =========   =======    ======    =======


Backlog And Entered
- -------------------
Orders-YTD FY 2005         Filtration   Comm.      Test      Total
- ------------------         ----------   -----      ----      -----
  Beginning Backlog-
   9/30/04                 $  77,753   108,661    62,664    249,078
  Entered Orders              99,749    62,663    52,990    215,402
  Sales                      (84,979)  (69,618)  (55,938)  (210,535)
                             -------   -------   -------   --------
  Ending Backlog-
   3/31/05                 $  92,523   101,706    59,716    253,945
                           =========   =======    ======    =======



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