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 6650-01-227-4976
NSN 5990-00-716-7796
NSN 6135-01-536-8333
NSN 5925-01-288-0025
NSN 6685-01-026-4330
NSN 5950-01-655-5655
NSN 5945-01-609-4103
NSN 5895-01-141-6550
NSN 5930-01-444-8193
NSN 5855-00-688-9954
NSN 6240-00-740-8901
NSN 4140-01-226-3314