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 5965-01-053-7168
NSN 5985-00-052-0222
NSN 4140-00-125-0837
NSN 6685-00-461-1902
NSN 5925-01-471-1761
NSN 5905-01-281-7653
NSN 5925-00-580-0869
NSN 5855-01-210-7636
NSN 5965-01-530-2673
NSN 5935-00-490-1333
NSN 6135-01-532-0775
NSN 6220-00-141-6150