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 5975-01-345-4177
NSN 5905-01-595-4911
NSN 6685-00-309-0477
NSN 6135-00-921-6487
NSN 5920-00-274-6929
NSN 6320-01-434-6861
NSN 6620-01-502-9104
NSN 6220-01-136-2765
NSN 5835-01-174-4276
NSN 2925-01-648-6859
NSN 5945-01-174-3457
NSN 5915-01-007-4031