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 4140-00-303-3133
NSN 2925-00-533-6262
NSN 2925-01-354-1752
NSN 5990-00-938-4302
NSN 6110-01-602-0478
NSN 6685-01-634-0611
NSN 5920-01-100-8939
NSN 5985-00-232-3459
NSN 5910-00-916-3986
NSN 5925-00-499-0088
NSN 5910-01-602-9157
NSN 5920-01-240-6373