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 6240-01-555-8649
NSN 6105-01-532-7802
NSN 5945-01-081-2845
NSN 6135-01-497-4516
NSN 5960-01-018-4162
NSN 5855-01-348-6690
NSN 4140-01-378-8390
NSN 6610-01-300-4537
NSN 5925-00-258-9814
NSN 5999-01-322-9023
NSN 5910-00-574-5753
NSN 6110-00-883-3505