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 5975-01-172-2322
NSN 7035-01-574-3087
NSN 5855-01-173-0808
NSN 5930-01-514-8207
NSN 5965-00-913-9545
NSN 6685-01-488-6219
NSN 5835-01-302-2223
NSN 4140-01-398-0286
NSN 5950-01-168-4639
NSN 6610-01-021-2432
NSN 5945-01-045-5756
NSN 5835-01-550-5094