GENERAL-ELECTRIC / DEFENSE ELECTRONIC DIVISION (1950)
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S C A L E S of the GENERAL-ELECTRIC CIRCULAR SLIDE RULE
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( one-sided only )
D X outer circle
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C X inner circle
REMARKS:
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This simple Circular is made of plastic and came with no case.
It has vertical RULERS ( 0 .. 5 cm / 0 .. 2" ) on the sides.
impressum:
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© C.HAMANN http://public.BHT-Berlin.de/hamann 09/17/10
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