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 5975-01-229-2839
NSN 5998-01-555-8489
NSN 6610-00-760-4476
NSN 6620-01-171-9597
NSN 4140-01-176-6876
NSN 6110-00-222-8955
NSN 5999-00-196-1335
NSN 6650-01-554-2824
NSN 6150-01-174-5568
NSN 6320-01-227-2648
NSN 6240-01-312-2061
NSN 5920-01-612-6588