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 5990-00-830-5051
NSN 5935-01-092-5523
NSN 6240-00-231-0761
NSN 2925-00-963-0943
NSN 5960-00-833-7438
NSN 6610-01-108-8914
NSN 5990-00-400-4794
NSN 6105-01-321-5226
NSN 5975-00-920-4205
NSN 5975-01-131-9492
NSN 6145-00-530-8427
NSN 6240-01-235-8281