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 5965-00-174-5792
NSN 5945-00-362-7192
NSN 5930-01-197-0251
NSN 5998-01-463-9077
NSN 7035-01-633-9537
NSN 6105-00-275-0826
NSN 2925-01-519-6726
NSN 7035-00-585-2113
NSN 5985-01-391-7458
NSN 6105-01-377-6284
NSN 6320-00-115-0883
NSN 4140-00-812-6330