A piece of transparent material specifically designed to be placed directly in front of a dial or scale to protect it from foreign matter. It is cut to size and may include a frame. It may have an index line or other marking. See also window, observation; and dial, scale.
Classification: Clock or watch glass; glasses for noncorrective spectagles not optically worked; hollow glass spheres and their segments for the mnfctr ofsuch glasses
NSN 2925-01-603-2033
NSN 5855-00-198-3197
NSN 5999-00-232-4479
NSN 5985-00-563-5961
NSN 6685-01-515-2520
NSN 5998-01-510-2316
NSN 5925-01-236-1409
NSN 6220-01-446-0227
NSN 6320-01-615-7202
NSN 2925-01-643-8395
NSN 5975-01-108-7049
NSN 5930-00-246-9757