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 5910-01-082-9270
NSN 4140-01-156-5333
NSN 5996-01-212-3066
NSN 5990-01-517-1909
NSN 5925-01-296-8304
NSN 5905-01-282-8943
NSN 5998-01-323-7112
NSN 5960-01-162-6166
NSN 6610-00-382-0266
NSN 5855-01-125-9167
NSN 6610-01-369-9978
NSN 6610-01-529-0311