****This is an untested item. The Vintage Hampden Wattmeter Model ACWM-100-1 is a classic piece of electronic equipment that can be found in educational training school labs. Produced by the renowned brand Hampden in the United States, this wattmeter is a valuable tool for measuring electrical power and is a must-have for vintage electronics enthusiasts and collectors. Its durable construction and precise measurements make it a reliable choice for labs and workshops looking to add a piece of history to their collection.