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 2925-01-014-8007
NSN 5930-01-078-0330
NSN 5960-00-469-1126
NSN 6650-01-540-5157
NSN 6620-00-278-7313
NSN 5920-01-073-8713
NSN 4140-01-247-4837
NSN 5998-01-058-1054
NSN 6220-00-915-6592
NSN 6610-01-097-5073
NSN 6620-00-060-6801
NSN 5990-00-067-6791