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 4140-01-617-4488
NSN 6685-00-270-0692
NSN 5990-00-487-7896
NSN 6610-01-319-5039
NSN 5965-00-578-8931
NSN 7035-01-060-0166
NSN 5950-00-481-8854
NSN 6105-01-618-5747
NSN 5855-01-098-9038
NSN 5998-01-339-9960
NSN 5925-01-452-4493
NSN 5950-01-353-1135