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 6135-01-560-3173
NSN 6320-01-532-7491
NSN 5920-01-089-2128
NSN 5985-01-519-6361
NSN 5930-01-126-0066
NSN 4140-01-606-8332
NSN 7035-00-480-6767
NSN 6645-00-652-6723
NSN 6610-01-351-4607
NSN 6220-00-546-1836
NSN 5950-00-721-5642
NSN 7035-01-369-1445