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 5910-00-332-5590
NSN 6645-00-527-7258
NSN 5930-01-553-9078
NSN 5998-00-554-9725
NSN 5999-01-585-8435
NSN 6110-00-581-4445
NSN 5990-01-540-1619
NSN 4140-01-631-4447
NSN 5990-01-386-5561
NSN 5996-00-693-9568
NSN 6145-01-362-6681
NSN 5985-00-603-8056