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 5905-00-311-2173
NSN 5855-01-059-2710
NSN 6320-01-139-0533
NSN 7035-00-140-0474
NSN 4140-01-458-2743
NSN 5965-01-039-8557
NSN 5855-01-546-9423
NSN 5985-01-400-5948
NSN 6650-01-429-9242
NSN 2925-01-183-2897
NSN 6610-01-437-2506
NSN 6610-01-500-0863