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 6145-01-624-6480
NSN 6145-00-804-6037
NSN 6240-01-227-4178
NSN 4140-01-407-1139
NSN 7035-01-424-7019
NSN 6130-00-932-1591
NSN 5990-01-376-8930
NSN 6685-00-143-7281
NSN 5998-01-251-1088
NSN 5910-00-932-6893
NSN 5935-01-246-4144
NSN 7035-00-215-3272