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 5930-01-553-2791
NSN 6320-01-592-4567
NSN 5996-01-151-2452
NSN 5960-00-985-9193
NSN 5965-00-959-8162
NSN 5985-01-367-4656
NSN 5920-01-444-3983
NSN 5990-00-506-8315
NSN 5910-01-625-4450
NSN 5925-00-262-6087
NSN 5935-01-528-2647
NSN 5920-00-796-6794