Details
New old stock octal voltage regulator. Regulates to 75 volts. Identical to 0A3, except for a smaller T-9 bulb size. Various brands.
NSN/FSN = 5960008452410, 5960001883565, 5960005576929, 5960006828624
Signal Corps Number = VT-260
HP/Agilent Number = 1940-0006