Heathkit VT-1 Vibrator Tester Tests car radio vibrators for proper starting and indicates the quality of the output on a large “GOOD-BAD” scale. Checks both interruptor and self-rectifier type4s in five different sockets. Operates from any battery eliminator delivering variable voltage from 4 to 6-v DC at 4-amps. Ideal companion for Battery Eliminator Model # BE-4. 6 lbs. 1956: $14.50.