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 6240-01-392-5991
NSN 5915-01-547-9960
NSN 5915-01-025-0346
NSN 5925-01-645-4909
NSN 5996-00-770-1863
NSN 5950-01-092-6792
NSN 6135-00-377-9165
NSN 6645-01-349-1631
NSN 4140-01-140-0966
NSN 4140-01-040-1700
NSN 6650-01-217-0303
NSN 6320-00-937-5625