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 5930-00-811-1153
NSN 6650-00-852-2736
NSN 5945-01-356-4135
NSN 5950-00-141-3872
NSN 4140-01-308-5649
NSN 5990-01-277-9753
NSN 6110-01-654-7066
NSN 6110-00-691-7453
NSN 5945-00-822-3858
NSN 6650-01-399-8552
NSN 6145-00-859-2522
NSN 7035-01-281-3642