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 5960-01-536-9763
NSN 6645-01-394-5149
NSN 5905-01-591-2495
NSN 5835-01-250-2939
NSN 5945-01-445-7162
NSN 5895-00-107-0198
NSN 5999-01-196-9326
NSN 6240-00-372-4841
NSN 5925-01-006-0117
NSN 5915-00-516-9987
NSN 7035-01-633-9537
NSN 4140-00-432-5593