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 6645-00-991-8704
NSN 7035-00-417-2967
NSN 5835-01-463-2334
NSN 5920-01-264-9259
NSN 6145-00-375-5224
NSN 5985-00-465-1143
NSN 6620-01-130-2626
NSN 5910-01-283-2694
NSN 6240-01-084-3952
NSN 5960-00-930-5360
NSN 6135-01-062-9356
NSN 5915-01-288-0432