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 5990-01-232-2625
NSN 6220-01-653-2386
NSN 5935-01-013-0150
NSN 5996-01-579-0202
NSN 6685-01-200-8184
NSN 5998-01-446-1168
NSN 6685-00-233-6563
NSN 6650-01-192-9075
NSN 5835-01-396-0640
NSN 5965-01-475-0666
NSN 5998-01-300-8433
NSN 5975-01-428-7278