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 6650-00-760-1385
NSN 5965-01-003-2641
NSN 5835-01-476-8210
NSN 5990-01-057-4191
NSN 5996-00-483-8322
NSN 6150-01-025-6305
NSN 6240-01-144-5898
NSN 6610-01-517-1901
NSN 7035-00-849-5526
NSN 5855-00-688-9954
NSN 6145-01-063-8566
NSN 6610-00-190-3684