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 5905-01-634-0595
NSN 5945-01-362-7740
NSN 5910-00-181-5882
NSN 5930-01-398-1878
NSN 5915-00-078-9574
NSN 6220-00-812-0515
NSN 5950-01-004-1559
NSN 6240-01-060-6037
NSN 5920-00-919-4512
NSN 5895-01-100-5452
NSN 6620-00-079-0311
NSN 6145-01-442-6064