Thread series designator: un; thread size: 0.250; thread quantity per inch: 28
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 5950-00-401-7471
NSN 5905-00-010-3012
NSN 2925-01-412-9520
NSN 6220-00-133-2155
NSN 6650-01-105-5608
NSN 5855-01-609-3732
NSN 5910-01-517-1237
NSN 2925-00-553-8799
NSN 5998-01-290-5127
NSN 5965-01-423-8543
NSN 5915-01-394-3860
NSN 5999-00-353-1234