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 6620-01-461-0899
NSN 5998-00-058-7158
NSN 6685-00-369-6912
NSN 5990-01-382-5364
NSN 5985-01-342-8461
NSN 5996-00-056-7153
NSN 5835-01-152-9483
NSN 4140-00-064-7847
NSN 5855-01-472-2554
NSN 5855-00-688-9954
NSN 5996-01-312-0500
NSN 6620-01-659-5293