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 6220-00-911-0318
NSN 6620-01-476-7355
NSN 6105-00-143-7283
NSN 5985-01-415-6259
NSN 5910-01-087-2101
NSN 4140-00-360-2457
NSN 5895-01-306-8515
NSN 6110-00-855-5695
NSN 6685-01-564-8954
NSN 6320-01-054-3046
NSN 5925-00-644-5546
NSN 5945-01-130-8303