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 6610-01-653-2733
NSN 5925-01-606-5350
NSN 6145-01-607-6165
NSN 5915-01-422-0564
NSN 6150-00-431-9694
NSN 5930-00-833-9808
NSN 5915-01-650-3482
NSN 5835-00-257-2852
NSN 4140-01-434-6292
NSN 6240-00-104-4662
NSN 5985-01-220-4486
NSN 5835-01-528-1864