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 6650-01-506-5636
NSN 6150-00-774-6782
NSN 5996-00-369-5299
NSN 6130-01-623-9753
NSN 5920-00-711-1741
NSN 5855-01-064-8961
NSN 5950-00-248-0540
NSN 6610-01-118-7577
NSN 4140-01-487-3180
NSN 6145-00-630-2010
NSN 6145-00-010-1425
NSN 4140-01-143-5397