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 6320-01-512-2031
NSN 6220-00-316-2500
NSN 5999-01-467-2371
NSN 5920-01-652-5663
NSN 6620-01-600-0479
NSN 5998-01-116-2066
NSN 5960-01-309-5933
NSN 4140-01-605-8793
NSN 5910-00-738-8584
NSN 7035-01-521-3449
NSN 6135-01-413-4747
NSN 5945-01-232-9639