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 6645-00-258-8547
NSN 5920-00-430-8811
NSN 7035-01-206-2623
NSN 4140-01-196-5232
NSN 6610-01-421-4396
NSN 5965-01-173-9106
NSN 5999-00-518-1007
NSN 5905-01-499-0731
NSN 5985-00-102-9363
NSN 6645-00-300-6459
NSN 5910-01-208-9097
NSN 5950-01-652-3667