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 4140-00-892-5952
NSN 6620-01-381-6225
NSN 6130-01-478-3712
NSN 5915-01-444-2198
NSN 6135-00-575-8942
NSN 5985-00-127-7313
NSN 4140-01-436-5184
NSN 6150-00-111-7281
NSN 5965-00-910-3233
NSN 7035-00-946-2642
NSN 5950-01-457-5543
NSN 5915-01-065-6263