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 5855-01-240-4958
NSN 6240-00-786-6170
NSN 6610-01-469-6235
NSN 5996-00-475-9778
NSN 5925-01-233-0815
NSN 6620-01-029-3171
NSN 5990-01-054-4255
NSN 5996-00-933-4163
NSN 5996-01-255-3281
NSN 5915-01-369-0811
NSN 5999-01-159-7935
NSN 5999-01-075-2650