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 5990-00-177-2924
NSN 7035-01-432-2424
NSN 6130-01-392-6107
NSN 6150-00-297-3928
NSN 4140-01-598-5101
NSN 5855-01-225-5855
NSN 6645-00-181-1877
NSN 6135-01-501-5376
NSN 5965-01-093-0642
NSN 5960-00-330-8975
NSN 6620-01-230-0197
NSN 5996-00-011-5651