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 4140-01-353-0895
NSN 6110-01-440-9158
NSN 5910-01-346-6003
NSN 5920-00-790-7906
NSN 5905-01-324-6525
NSN 4140-01-173-7867
NSN 6105-00-824-1188
NSN 5965-01-046-9619
NSN 5965-01-642-0609
NSN 7035-01-481-8247
NSN 6135-01-315-7888
NSN 5930-01-476-4990