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 6105-01-302-5454
NSN 5855-00-149-0766
NSN 6620-01-059-0876
NSN 5835-01-555-8963
NSN 6135-01-204-8712
NSN 6130-00-247-4782
NSN 6685-01-618-4505
NSN 5925-01-397-1460
NSN 6610-01-491-6226
NSN 5945-01-380-3876
NSN 5975-01-388-3413
NSN 6610-01-568-5341