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 6645-01-188-5237
NSN 6620-01-642-6107
NSN 5998-01-093-3705
NSN 6130-00-115-1862
NSN 5835-00-198-4936
NSN 5990-00-827-3966
NSN 5996-00-155-9309
NSN 6130-01-271-8035
NSN 6220-01-066-4081
NSN 6105-00-825-2684
NSN 5915-00-659-3107
NSN 5945-00-954-2206