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 5999-01-165-1688
NSN 5990-01-291-6897
NSN 5950-01-016-0866
NSN 6645-00-137-7699
NSN 4140-00-869-9032
NSN 5985-00-620-0309
NSN 5925-00-655-4345
NSN 5996-01-197-7005
NSN 2925-01-399-2765
NSN 5835-01-474-1224
NSN 5975-01-294-2800
NSN 5996-01-398-4755