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 2925-00-335-7119
NSN 5935-00-346-9573
NSN 5930-00-817-7726
NSN 5985-01-303-6157
NSN 5998-01-536-0327
NSN 5855-01-020-7982
NSN 6135-00-856-1343
NSN 5996-01-497-6996
NSN 4140-01-416-4898
NSN 5910-00-085-5818
NSN 5930-00-929-4950
NSN 5985-01-082-2575