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 6650-01-530-0589
NSN 5965-01-111-6031
NSN 5999-00-525-3995
NSN 6130-01-013-9343
NSN 4140-01-545-2631
NSN 5935-00-400-1749
NSN 5990-01-299-2014
NSN 5996-00-630-1883
NSN 5915-01-211-7777
NSN 5975-01-484-7894
NSN 6110-00-913-2574
NSN 6110-01-512-1537