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 2925-01-159-8312
NSN 5895-00-706-5419
NSN 5998-01-467-8580
NSN 5945-01-409-0879
NSN 5950-01-234-1532
NSN 5905-01-331-0460
NSN 5855-00-991-0096
NSN 5855-01-459-7508
NSN 5960-01-413-3877
NSN 6320-01-036-2598
NSN 5925-01-211-6660
NSN 6135-00-450-3528