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 5835-01-263-1293
NSN 5835-00-763-2938
NSN 6145-01-511-9871
NSN 5915-01-593-5798
NSN 5910-01-521-0890
NSN 4140-00-755-6814
NSN 5910-00-189-8653
NSN 5996-01-437-1186
NSN 5925-01-024-9568
NSN 5920-01-487-5516
NSN 5985-01-483-7076
NSN 6620-01-423-5875