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 6650-00-195-7519
NSN 6650-01-505-5097
NSN 6130-00-199-9545
NSN 4140-00-925-9218
NSN 6320-00-701-0437
NSN 7035-00-803-3056
NSN 5925-01-393-2573
NSN 4140-00-706-5830
NSN 4140-01-020-9926
NSN 5965-01-649-6410
NSN 6645-01-591-3970
NSN 5945-01-645-4780