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 4140-00-078-9357
NSN 5925-01-225-6809
NSN 5895-01-555-0238
NSN 5985-00-758-4548
NSN 4140-01-215-1125
NSN 5975-00-785-1154
NSN 5996-00-788-7670
NSN 6645-01-255-0391
NSN 5920-01-543-6348
NSN 5915-00-350-8346
NSN 5975-01-209-9931
NSN 5835-01-510-1873