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 6620-01-514-0754
NSN 6145-01-068-0560
NSN 5985-00-555-8814
NSN 5998-00-222-7755
NSN 6610-01-027-0087
NSN 5985-01-122-8212
NSN 6150-01-334-8042
NSN 5920-01-365-5878
NSN 6220-00-712-1779
NSN 7035-01-127-0147
NSN 5996-00-959-5944
NSN 5985-01-008-4787