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 6320-00-994-0179
NSN 6610-01-078-9238
NSN 6240-01-573-5941
NSN 5905-00-798-0705
NSN 6130-01-433-5318
NSN 5990-01-146-9126
NSN 6620-00-470-3219
NSN 6645-01-359-7875
NSN 5920-01-092-1148
NSN 5945-00-405-3200
NSN 5965-01-378-1393
NSN 5935-01-276-6335