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 5835-01-631-3940
NSN 5996-00-650-3481
NSN 4140-00-155-8012
NSN 5975-01-445-6681
NSN 5930-00-110-1670
NSN 5945-00-827-2801
NSN 5905-00-496-1855
NSN 5905-00-224-8147
NSN 2925-01-157-9204
NSN 5945-00-615-7742
NSN 6320-01-054-3046
NSN 6135-00-334-4500