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 5930-01-223-5157
NSN 6130-01-214-0366
NSN 5999-01-381-7722
NSN 6645-00-309-0447
NSN 5945-01-576-5936
NSN 6135-01-388-2761
NSN 5905-01-084-9138
NSN 6685-01-408-6372
NSN 5990-00-382-5885
NSN 6610-00-350-1091
NSN 6150-00-677-0037
NSN 6150-01-532-7957