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 5985-01-559-1900
NSN 5975-00-845-2097
NSN 5930-00-301-0065
NSN 5855-01-612-1834
NSN 5990-01-286-0601
NSN 5975-00-847-1244
NSN 2925-01-604-8984
NSN 5920-00-117-8280
NSN 5990-01-384-2697
NSN 6130-01-103-0924
NSN 5855-00-560-0110
NSN 6620-01-032-3937