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 5925-01-128-2717
NSN 6130-01-101-9026
NSN 6650-01-517-4412
NSN 5925-01-075-2728
NSN 5975-01-517-9846
NSN 6685-01-154-9655
NSN 5905-01-423-1338
NSN 5835-01-460-0582
NSN 5945-01-024-4422
NSN 5835-01-474-1224
NSN 5835-01-059-5535
NSN 6610-01-582-4232