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 5960-01-520-4615
NSN 5930-00-780-2047
NSN 5920-00-281-2488
NSN 5985-00-170-4156
NSN 5855-01-441-3189
NSN 5925-00-248-5734
NSN 5925-00-472-1371
NSN 5965-01-078-6776
NSN 5990-01-021-7303
NSN 6220-01-312-2678
NSN 5999-01-508-3470
NSN 5925-01-483-1656