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 5998-01-287-6586
NSN 2925-01-448-2880
NSN 6220-01-497-6244
NSN 5855-01-231-4945
NSN 6685-01-015-8645
NSN 6145-00-526-3056
NSN 6645-01-633-1852
NSN 6130-00-314-0455
NSN 5990-01-411-5930
NSN 5996-01-329-3408
NSN 6130-01-127-7304
NSN 5855-01-042-7990