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 6650-01-363-7857
NSN 6150-01-593-7448
NSN 5975-00-176-4651
NSN 5960-00-119-4476
NSN 6145-00-027-5955
NSN 5920-01-634-0250
NSN 5935-01-429-7008
NSN 5998-01-043-5653
NSN 6685-01-101-2574
NSN 5985-00-057-0563
NSN 6145-01-478-1722
NSN 5930-00-917-9579