WESTON 633 | CLIP ON AMMETER | CURRENT MEASUREMENT | VINTAGE METER REPAIR | OPEN SHUNT
Hi Guys, here's a classic Weston model 633 clip-on (aka clamp-on) Ammeter. Cosmetically excellent, but was not working correctly although the meter itself is in excellent condition. I did manage to repair it. I also traced out the internal wiring, and have made a simplified schematic which is included in the above video.