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 6610-01-657-5532
NSN 6320-01-373-9355
NSN 5960-00-099-9790
NSN 6645-01-139-6473
NSN 6645-01-633-1852
NSN 5925-01-178-8962
NSN 5930-01-101-2234
NSN 5950-01-375-1643
NSN 6650-01-381-6978
NSN 6145-00-487-9575
NSN 5950-01-243-3460
NSN 5975-01-444-0599