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 6145-01-234-6301
NSN 6620-00-456-0404
NSN 6645-01-066-3176
NSN 5960-00-948-6012
NSN 5855-01-165-6361
NSN 6105-00-728-8612
NSN 6645-01-608-0586
NSN 5930-01-473-5828
NSN 6240-01-527-0849
NSN 5910-01-320-3950
NSN 6105-01-366-2461
NSN 5935-00-843-2747