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 6150-01-537-9246
NSN 6610-00-186-9180
NSN 6645-01-542-3672
NSN 5915-01-484-1820
NSN 5925-00-627-0974
NSN 6650-00-023-1638
NSN 6105-01-174-1662
NSN 5855-00-337-3679
NSN 6110-00-982-2838
NSN 5920-00-510-7656
NSN 5950-01-654-6954
NSN 6685-00-703-2503