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 5930-01-149-8527
NSN 6610-01-622-2795
NSN 6620-01-087-4361
NSN 5915-00-205-2615
NSN 7035-00-849-5526
NSN 6220-00-262-7863
NSN 6110-01-500-6394
NSN 6645-00-400-3115
NSN 6685-01-435-8700
NSN 5915-01-579-2093
NSN 5975-01-281-7270
NSN 5996-01-641-6747