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 5855-01-490-6828
NSN 5905-01-514-1507
NSN 6150-01-196-0179
NSN 2925-00-420-8151
NSN 6110-01-113-1139
NSN 2925-01-252-8049
NSN 5910-00-922-8374
NSN 6105-01-391-7124
NSN 5835-01-485-0210
NSN 4140-01-649-3960
NSN 6110-00-596-9124
NSN 5930-00-814-0366