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 5910-01-379-3129
NSN 6645-00-292-5053
NSN 6620-00-031-8601
NSN 5950-01-558-8385
NSN 5905-01-423-8613
NSN 5920-01-510-2137
NSN 6685-01-521-0499
NSN 5930-01-604-1308
NSN 5960-01-539-1956
NSN 6220-00-925-7470
NSN 5915-00-926-8122
NSN 4140-01-366-6666