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 5910-01-383-8121
NSN 5915-01-580-0308
NSN 6240-00-113-8820
NSN 6240-01-647-3790
NSN 2925-01-400-2286
NSN 5990-00-573-6067
NSN 6220-00-411-9957
NSN 5999-00-396-6916
NSN 5945-00-819-3083
NSN 5996-01-451-3591
NSN 5930-01-280-5466
NSN 5855-00-149-0766