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 5990-01-443-2931
NSN 5996-00-780-6065
NSN 6145-01-453-6768
NSN 6240-01-280-5347
NSN 5905-01-407-0235
NSN 6645-01-271-0248
NSN 5895-01-513-4377
NSN 6145-01-200-7936
NSN 6130-01-562-2214
NSN 6220-01-025-6140
NSN 5895-01-489-1528
NSN 5915-00-151-7849