Details
New old stock octal voltage regulator. Regulates to 150 volts. Identical to 0D3, except for a smaller T-9 bulb size. Various brands.
NSN/FSN = 5960005382044, 5960006154732, 5960010338015, 5960001888573, 5960006828625, 5960003399628 Signal Corps Number = VT-139
HP/Agilent Number = 1940-0009
Tektronix Number = 154-0003-00