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 5910-00-936-8103
NSN 5855-01-425-1330
NSN 6240-01-258-5829
NSN 6650-00-269-5000
NSN 5920-01-276-2886
NSN 5960-01-444-2205
NSN 6135-00-062-5080
NSN 5915-01-108-0462
NSN 5960-01-367-6153
NSN 5990-00-179-2576
NSN 6650-00-195-7519
NSN 5975-01-600-2810