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 5920-01-448-0105
NSN 5996-01-425-1455
NSN 5998-00-128-1940
NSN 6320-00-701-0437
NSN 5895-00-019-0944
NSN 5835-01-073-6133
NSN 5960-01-605-9921
NSN 2925-01-590-3981
NSN 5965-01-232-6509
NSN 5905-00-286-5405
NSN 5990-00-277-3763
NSN 6145-00-564-5591