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 6220-01-108-6108
NSN 6135-01-079-7852
NSN 6145-01-479-9740
NSN 4140-00-821-9836
NSN 5960-00-839-9526
NSN 5998-01-318-2207
NSN 7035-01-440-8877
NSN 5975-01-608-3383
NSN 6645-00-456-0080
NSN 5990-01-419-0661
NSN 6130-01-221-4444
NSN 5920-01-228-4384