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 5998-01-010-3217
NSN 6650-01-003-9355
NSN 5915-01-446-7238
NSN 5990-00-859-0790
NSN 5905-01-138-3394
NSN 5925-00-686-3364
NSN 6650-01-056-6440
NSN 2925-01-595-4345
NSN 5945-00-409-6580
NSN 5950-01-174-7964
NSN 6685-01-551-7201
NSN 2925-01-041-8201