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 6240-00-952-1906
NSN 5855-00-411-8688
NSN 2925-00-872-4474
NSN 5990-01-442-3520
NSN 2925-01-552-7151
NSN 6320-01-462-2295
NSN 6610-01-094-8442
NSN 5835-00-366-0240
NSN 6645-01-297-3368
NSN 5999-00-719-9664
NSN 7035-01-347-6110
NSN 6320-00-360-1744