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 6645-01-457-3810
NSN 6220-01-462-2613
NSN 5930-01-018-4328
NSN 6320-00-116-3658
NSN 5930-00-797-9462
NSN 6220-00-279-8819
NSN 5950-01-613-5688
NSN 5975-01-330-0155
NSN 5960-01-157-7009
NSN 6620-01-202-6756
NSN 5950-00-005-0390
NSN 5925-01-465-3055