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 4140-01-175-3883
NSN 5905-01-283-2233
NSN 5975-00-857-3515
NSN 5910-00-164-9855
NSN 6610-00-441-0523
NSN 4140-01-111-2486
NSN 5930-01-223-6416
NSN 5985-00-540-6996
NSN 5999-01-277-7972
NSN 6240-01-327-3239
NSN 5905-01-180-7143
NSN 5915-00-593-8212