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 5910-01-511-0011
NSN 4140-01-417-3022
NSN 6320-01-512-2031
NSN 5835-00-409-8355
NSN 4140-01-534-8910
NSN 6620-00-392-9835
NSN 6320-01-318-4935
NSN 6150-00-914-2870
NSN 6240-01-010-2991
NSN 5996-00-453-6027
NSN 7035-01-093-5378
NSN 5996-01-120-8348