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 5950-01-415-0276
NSN 5965-00-253-1302
NSN 6130-01-420-9876
NSN 6620-00-754-4914
NSN 5996-00-740-8315
NSN 6320-01-526-5534
NSN 5998-01-211-6752
NSN 5920-00-115-2420
NSN 5910-01-512-3427
NSN 5895-01-071-6287
NSN 6105-01-518-9346
NSN 5930-01-170-1261