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U.S. Army Signal Corps TS-618/U multimeter (VTVM) from an old electrical supply collection.
This is a vintage 1950s portable vacuum tube volt-ohm meter, model TS-618/U, manufactured by Pilot Radio Corporation (serial 23, order 37912-PH-53). Measures DC volts (up to 1000V), resistance (up to high megs), and battery condition. Features analog meter (50 µA full scale), range/function switches, zero/adjust, probe leads, rugged military metal case with handle.
• Untested / for parts or restoration.
• No batteries or additional probes included beyond shown leads.
• In typical military surplus condition with heavy age wear: rust, paint chipping, oxidation, dust, patina, and exposed internals (likely needs recapping/cleaning for safe use).
• Sold as-is. No functionality claimed—buyer responsible for testing, repairs (high voltage inside due to VTVM design), battery sourcing, and safety checks. Great for military radio collectors, surplus enthusiasts, or parts harvesting.
• No warranty expressed or implied.
Photos show front panel (ranges, meter, controls), nameplate (TS-618/U, Pilot Radio, Signal Corps), internals (partial view), calibration sticker (1972/1973), and overall condition.
