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 5998-01-580-6453
NSN 6110-00-676-1599
NSN 5920-01-265-1873
NSN 6135-01-303-0295
NSN 5985-00-369-9299
NSN 5915-00-177-2513
NSN 6620-01-625-2855
NSN 5925-01-179-1453
NSN 2925-01-123-5856
NSN 5925-01-475-8608
NSN 5996-00-422-3328
NSN 5855-01-558-3616