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 5935-01-229-0924
NSN 6645-00-449-4446
NSN 6320-01-064-0372
NSN 6150-00-970-5206
NSN 5905-01-211-1280
NSN 5990-01-101-7602
NSN 5985-01-286-0747
NSN 5996-01-180-3107
NSN 5935-01-434-1623
NSN 5925-01-417-9170
NSN 7035-01-053-4769
NSN 6650-00-537-9222