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 5920-01-420-5768
NSN 5920-01-438-0557
NSN 6110-00-999-3130
NSN 5999-01-467-9710
NSN 6685-01-072-0858
NSN 6105-01-104-5214
NSN 5835-01-580-0446
NSN 5965-01-105-4959
NSN 6135-00-057-2005
NSN 4140-00-501-7833
NSN 6645-01-521-2533
NSN 6645-01-457-8642