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 5910-01-132-1541
NSN 6150-00-763-5067
NSN 4140-00-952-2287
NSN 5945-00-699-5756
NSN 6150-00-422-6862
NSN 6220-00-179-9104
NSN 5975-00-952-1791
NSN 5998-00-624-8510
NSN 5998-01-113-9230
NSN 5996-00-998-6341
NSN 6645-01-137-4310
NSN 5835-00-216-4568