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 5855-01-003-7102
NSN 6135-01-581-8163
NSN 5915-01-127-9211
NSN 6150-01-096-5213
NSN 6610-01-493-3262
NSN 5895-00-884-6143
NSN 6645-01-028-2051
NSN 6110-00-753-7677
NSN 6645-00-287-9192
NSN 5999-00-221-9594
NSN 5996-00-196-1913
NSN 2925-00-309-4884