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 6240-01-187-1765
NSN 6650-01-515-9396
NSN 5950-00-482-2082
NSN 5999-01-557-9638
NSN 5945-00-465-6477
NSN 5998-01-394-9052
NSN 6240-01-288-5163
NSN 5975-01-392-1187
NSN 6145-01-089-7207
NSN 5990-01-255-7387
NSN 5910-01-061-7439
NSN 2925-00-891-9289