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 4140-01-509-9581
NSN 6610-00-471-4260
NSN 6130-01-550-8447
NSN 5950-00-410-5437
NSN 5895-01-311-1362
NSN 4140-00-753-1416
NSN 6320-01-359-3921
NSN 7035-00-442-1869
NSN 5975-00-133-3343
NSN 5920-01-602-7120
NSN 6145-01-499-0616
NSN 6130-00-364-7801