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 6135-00-170-8819
NSN 5990-00-900-4459
NSN 5920-01-583-6368
NSN 6240-00-079-1759
NSN 5965-01-506-5558
NSN 5925-00-236-2350
NSN 5945-01-065-8125
NSN 5925-01-278-4957
NSN 5855-01-243-2355
NSN 6220-01-111-9730
NSN 4140-01-447-3141
NSN 6220-00-801-0801