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 5920-01-332-8992
NSN 6135-00-708-0892
NSN 5905-01-230-5887
NSN 6240-01-503-8717
NSN 6645-00-073-9949
NSN 5996-00-151-4462
NSN 5975-00-558-2495
NSN 5975-01-463-8705
NSN 6610-01-077-6783
NSN 6240-01-195-4511
NSN 5965-00-431-2492
NSN 6145-01-134-7346