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 4140-01-239-2309
NSN 6135-01-643-9081
NSN 5925-00-864-6228
NSN 6110-01-282-6574
NSN 6320-01-585-8468
NSN 5985-00-763-7326
NSN 5930-01-622-4546
NSN 6240-01-252-9374
NSN 5975-01-521-9128
NSN 6150-01-147-4604
NSN 6320-00-098-2858
NSN 6685-01-499-4343