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 6650-01-448-4996
NSN 6685-01-268-7141
NSN 5915-01-365-7340
NSN 5905-01-096-2922
NSN 5855-00-401-3442
NSN 6620-01-360-1571
NSN 2925-01-185-1814
NSN 6610-01-238-8712
NSN 5905-00-216-6576
NSN 5905-01-650-5568
NSN 6110-01-266-4514
NSN 5935-01-465-7588