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 6220-01-412-0687
NSN 6135-00-010-5275
NSN 5975-01-021-1940
NSN 6135-01-392-8344
NSN 6130-00-042-6436
NSN 5835-00-892-3510
NSN 5960-01-044-4902
NSN 5990-01-548-3711
NSN 5965-00-983-1815
NSN 6650-01-642-6773
NSN 6685-01-618-0582
NSN 6620-00-145-8232