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 5990-01-266-9144
NSN 4140-01-525-8158
NSN 6110-00-205-1778
NSN 5945-01-425-4129
NSN 5998-01-254-2252
NSN 6650-01-388-8727
NSN 5975-00-925-4586
NSN 5905-01-464-2181
NSN 7035-01-155-9025
NSN 6240-00-316-3167
NSN 5965-01-020-4104
NSN 2925-00-869-1451