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 5910-01-610-5905
NSN 6610-01-450-3998
NSN 6320-01-519-8767
NSN 5915-01-447-6437
NSN 6645-01-217-8809
NSN 5965-01-119-1898
NSN 5895-01-340-4868
NSN 5835-01-406-7633
NSN 6135-01-089-4888
NSN 5895-00-068-7134
NSN 5960-01-658-9538
NSN 5920-01-634-0250