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 5960-01-391-8860
NSN 6220-01-412-7650
NSN 5960-00-855-8792
NSN 6135-01-252-0315
NSN 5910-01-463-6664
NSN 6645-01-076-4655
NSN 5930-00-175-7622
NSN 5920-01-211-5557
NSN 5996-00-853-6089
NSN 4140-01-455-0924
NSN 6220-01-199-5356
NSN 6650-00-958-7408