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 5965-01-294-7522
NSN 5920-00-420-7434
NSN 7035-00-470-4977
NSN 6610-01-101-1927
NSN 5910-01-128-3212
NSN 5930-01-420-7454
NSN 6105-00-146-8697
NSN 6145-01-526-9217
NSN 5905-01-102-2102
NSN 5910-01-611-9278
NSN 5905-01-537-2412
NSN 5996-00-841-1862