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 4140-00-188-3800
NSN 5990-00-952-0696
NSN 6220-00-583-9889
NSN 6645-01-040-8337
NSN 5935-00-259-4505
NSN 5925-01-214-6494
NSN 6145-00-062-7897
NSN 5895-01-540-6730
NSN 5920-01-297-5895
NSN 6685-01-213-6245
NSN 5965-01-560-1824
NSN 5950-00-905-9061