Vintage NAVSHIPS 91148 Oscilloscope TS-239A/UP Instruction Book 1948 Navy Manual Regular fit ” Over “U

” Over “U

while the others are partial or incomplete examples

Superb un-issued condition 1944 Wood U

or collection purposes

Vintage NAVSHIPS 91148 Oscilloscope TS-239A/UP Instruction Book 1948 Navy Manual Regular fit ” Over “UOriginal U. S. Navy Bureau of Ships (BuShips) Instruction Book for Oscilloscope TS 239A UP, published by Lavoie Laboratories for the Navy Department. This authentic post WWII technical manual is identified as NAVSHIPS 91148 and was approved on 15 December 1948. The manual provides operating and technical information for the TS 239A UP oscilloscope, an important piece of electronic test equipment used in naval communications, radar, and electronics