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 6645-00-434-8793
NSN 6685-01-534-7192
NSN 6220-00-301-2098
NSN 5920-01-160-0057
NSN 6135-01-599-4006
NSN 5920-01-331-0293
NSN 2925-01-201-3043
NSN 6320-01-412-2973
NSN 5999-01-531-6202
NSN 5990-01-529-8433
NSN 6110-01-148-2923
NSN 5835-01-632-6627