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 6150-01-449-3165
NSN 6645-01-519-2220
NSN 5998-00-158-6329
NSN 6645-00-917-2143
NSN 6620-00-827-1611
NSN 6645-01-162-8023
NSN 5855-01-047-3231
NSN 5945-01-183-7948
NSN 5999-00-476-4340
NSN 6220-01-267-7945
NSN 6610-00-038-8148
NSN 5945-01-350-0053