Manufacturer : Amprobe Instruments , New York -USA Part Number : RS3 Type: Clamp/Tong Range: 0-300 Amps / 1-600 Volts Readout: Analog Condition: Looks Good ,both adjusting knobs and needle move freely. No instruction book so is untested. Age: Looks 60's /70's as it has hard plastic case not Bakelite
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