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 5930-01-213-1002
NSN 5925-01-458-4228
NSN 5975-00-541-8531
NSN 5905-01-173-1725
NSN 6320-01-285-1922
NSN 5996-00-905-6610
NSN 6135-01-492-5717
NSN 5915-01-203-0989
NSN 5985-01-498-5208
NSN 4140-00-166-8023
NSN 5835-00-779-2836
NSN 6105-00-105-2443