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GG-I-460 1952 Edition, July 21, 1952
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ILLUMINATORS;MICROSCOPE,115 VOLT
Includes all amendments and changes through Cancellation Notice 1, April 14, 1990
Additional Comments: CNCL NO S/S
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This specification covers 115-volt microscope illuminators, complete.

Microscope illuminators covered by this specification shall be of the following types, as specified in the invitation for bids:
  Type I. --Substage, daylight, a.c.-d.c.
  Type II. --Junior, darkfield illumination
               and general use, a.c.-d.c.
  Type III.--Senior, darkfield illumination
               and general use, a.c.-d.c.
  Type IV.--Adjustable, darkfield illumination
             and general use, a.c.