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 6685-01-287-8062
NSN 5855-00-361-0167
NSN 5965-00-314-5303
NSN 5935-00-503-6048
NSN 5975-01-291-0993
NSN 5965-00-196-7320
NSN 5975-00-817-1781
NSN 5915-01-406-3847
NSN 5975-01-257-3494
NSN 5910-00-361-8667
NSN 5920-00-452-3889
NSN 5998-01-125-4603