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 6145-01-139-4859
NSN 6620-01-601-7491
NSN 6150-01-118-5796
NSN 5945-01-462-0703
NSN 6610-00-284-3093
NSN 5925-01-341-8166
NSN 6135-01-223-3869
NSN 5985-01-483-5470
NSN 5915-00-925-2513
NSN 5920-01-576-8240
NSN 5998-01-576-1467
NSN 5920-00-267-3109