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 4140-01-138-4889
NSN 5950-01-601-0046
NSN 7035-01-394-3169
NSN 6145-01-523-8049
NSN 6110-01-546-6232
NSN 5855-01-262-8013
NSN 6130-01-011-8507
NSN 5945-00-268-8124
NSN 5945-01-309-8695
NSN 6240-01-080-7778
NSN 5965-00-686-7067
NSN 5935-00-021-5427