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 5915-01-040-1781
NSN 6645-01-100-3296
NSN 7035-01-633-9537
NSN 5975-01-541-7471
NSN 6150-00-407-1386
NSN 5965-01-549-0176
NSN 6135-00-932-3136
NSN 5945-00-911-9164
NSN 6110-01-318-2640
NSN 5985-01-359-1597
NSN 4140-01-378-0903
NSN 2925-01-140-1015