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 6320-01-194-1253
NSN 5835-00-682-5177
NSN 6685-01-588-5887
NSN 4140-00-299-0595
NSN 5945-00-933-8492
NSN 6110-00-351-4627
NSN 5999-01-573-7602
NSN 2925-01-048-4006
NSN 6320-01-237-9746
NSN 5985-01-084-0077
NSN 6620-01-117-7303
NSN 5915-01-412-0572