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 5975-00-345-0683
NSN 5920-01-516-8888
NSN 5945-00-294-4869
NSN 5920-01-199-5522
NSN 5965-01-607-7684
NSN 5990-00-800-2521
NSN 5945-01-235-1267
NSN 5835-01-440-5391
NSN 6145-01-591-0236
NSN 6645-01-537-1066
NSN 6685-00-151-5257
NSN 6620-01-480-2648