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 5999-01-379-5707
NSN 5930-01-653-5964
NSN 5996-00-759-0971
NSN 5920-00-529-0618
NSN 5975-00-561-8238
NSN 5996-01-142-0878
NSN 5930-01-218-5378
NSN 5925-00-267-3044
NSN 6650-00-256-9059
NSN 5925-00-517-8512
NSN 5960-01-394-3846
NSN 6620-01-217-3216