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 6220-01-231-7601
NSN 6645-01-034-0469
NSN 5855-00-763-2155
NSN 5930-00-560-7187
NSN 6320-00-731-6134
NSN 6135-01-390-1841
NSN 5925-00-889-4990
NSN 5960-01-381-2478
NSN 5996-00-316-5115
NSN 5960-01-142-1995
NSN 6650-01-522-3637
NSN 5960-00-228-0028