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 5905-01-629-7115
NSN 5915-00-898-1343
NSN 6610-01-400-3880
NSN 6220-00-557-4114
NSN 6145-00-360-7760
NSN 5975-00-195-1543
NSN 6650-01-258-5871
NSN 7035-01-413-6697
NSN 6620-00-530-3939
NSN 5920-00-151-4039
NSN 5835-01-544-3917
NSN 5925-01-192-8890