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 6130-01-214-3661
NSN 6650-01-661-2520
NSN 4140-01-425-4450
NSN 6620-00-299-2530
NSN 5950-01-499-9180
NSN 6645-00-242-0480
NSN 6150-01-109-8776
NSN 5996-01-458-3885
NSN 5855-00-288-1408
NSN 6240-01-369-6464
NSN 6145-01-362-9836
NSN 5925-00-364-7969