EXHIBIT 11
THERMEDICS DETECTION INC.
COMPUTATION OF EARNINGS (LOSS) PER SHARE
YEAR ENDED THREE MONTHS ENDED
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DECEMBER 31, DECEMBER 30, DECEMBER 28, MARCH 30, MARCH 29,
1994 1995 1996 1996 1997
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COMPUTATION OF PRIMARY EARNINGS
(LOSS) PER SHARE:
Net Income (Loss) (a) $ 6,380,000 $ 1,508,000 $ 362,000 $ (524,000) $ 1,024,000
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Shares:
Weighted average shares outstanding 10,000,000 10,000,000 10,275,385 10,032,967 10,975,926
Add: Shares issuable from assumed exercise of
options and shares issued in private
placements (as determined by the
application of the treasury stock method) 68,834 68,834 44,888 65,889 --
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Weighted averages shares, as adjusted (b) 10,068,834 10,068,834 10,320,273 10,098,856 10,975,926
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Primary Earnings (Loss) per Share (a) / (b) $ .63 $ .15 $ .04 $ (.05) $ .09
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