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 5920-01-483-1537
NSN 5920-01-160-0057
NSN 2925-00-436-3527
NSN 4140-01-254-2739
NSN 5945-01-542-8744
NSN 5835-01-290-9763
NSN 5855-01-391-9334
NSN 5905-01-167-5184
NSN 5965-01-039-1430
NSN 7035-01-129-7834
NSN 5998-01-605-2824
NSN 5999-01-549-7901