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 6240-01-538-3727
NSN 5835-01-051-7584
NSN 5915-01-364-0795
NSN 6650-01-290-4001
NSN 5910-01-212-4231
NSN 6645-01-425-2330
NSN 5930-01-327-6067
NSN 5998-01-088-7262
NSN 6110-00-625-8643
NSN 6645-01-622-6161
NSN 4140-01-224-6994
NSN 6650-00-552-8377