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 6620-01-340-9425
NSN 6150-00-226-8000
NSN 5915-01-560-6795
NSN 5920-01-163-6327
NSN 5960-01-449-1310
NSN 5975-00-904-6348
NSN 6240-01-481-1796
NSN 5990-01-280-0321
NSN 5920-01-318-9442
NSN 5996-00-468-1874
NSN 6150-00-534-7929
NSN 5915-01-167-0689