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 5855-01-543-8175
NSN 6145-00-738-5601
NSN 5985-00-007-2654
NSN 6645-01-016-7706
NSN 6320-01-384-7079
NSN 6110-01-367-6526
NSN 6610-00-553-5103
NSN 5990-01-024-9659
NSN 6150-00-630-4635
NSN 6650-00-499-7446
NSN 5835-00-752-6065
NSN 6685-01-462-4491