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 6145-01-019-6897
NSN 5930-00-025-1010
NSN 6135-00-223-9563
NSN 5998-01-096-4942
NSN 6645-01-425-1673
NSN 5990-01-411-5930
NSN 5996-00-270-0340
NSN 5920-01-276-6208
NSN 5960-00-777-4320
NSN 5960-01-497-4572
NSN 6150-01-507-1911
NSN 5950-01-137-4033