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 5930-01-429-8443
NSN 5950-01-622-9059
NSN 5920-01-475-1251
NSN 6135-01-344-2442
NSN 6645-00-825-2448
NSN 5950-01-004-4695
NSN 5990-00-501-4994
NSN 6110-01-534-4944
NSN 5895-00-176-1776
NSN 6105-01-350-9211
NSN 5965-01-432-1943
NSN 6650-01-204-7841