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 5905-01-182-2424
NSN 2925-00-038-0596
NSN 6135-01-589-9467
NSN 5998-01-563-7794
NSN 6650-01-145-3731
NSN 5835-01-328-6626
NSN 5960-01-425-1454
NSN 5998-01-014-1008
NSN 6220-01-508-3408
NSN 5935-01-266-7644
NSN 5855-01-163-8152
NSN 5915-01-410-9188