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 5910-01-419-0290
NSN 5975-01-421-7903
NSN 5990-01-473-4314
NSN 5915-01-406-2626
NSN 5895-00-119-4450
NSN 6135-01-101-5039
NSN 6620-01-611-2038
NSN 6145-01-533-2876
NSN 5930-00-797-6262
NSN 7035-00-264-7543
NSN 6620-01-572-8734
NSN 5996-01-161-6296