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 4140-00-974-7582
NSN 4140-01-065-1884
NSN 6145-01-384-3748
NSN 5930-01-407-2196
NSN 5935-01-040-8980
NSN 5920-01-472-3583
NSN 5910-00-891-2571
NSN 6240-01-050-9156
NSN 5915-00-578-1917
NSN 5996-01-336-0338
NSN 6220-00-523-9406
NSN 6105-00-740-7757