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 6320-00-593-0379
NSN 4140-01-169-8105
NSN 6220-01-047-7325
NSN 5910-01-564-9266
NSN 5935-01-463-6622
NSN 5975-00-193-8508
NSN 5990-01-100-1840
NSN 6645-01-487-2052
NSN 5950-00-787-4835
NSN 6220-00-577-3435
NSN 6650-00-736-8456
NSN 6110-01-366-9639