Thompson Ammeter Horn often compensating

often compensating

These were frequently used with shop lights or billboards

now being a primer manufacturer of power distribution equipment

It was a telephone equipment supplier for independent telephone companies in North America

The Motorola 408 iHorn is made from a Motorola 1946 Model 408 car radio with control head and a Victrola Amberola series horn

Thompson Ammeter Horn often compensatingThe Thompson Ammeter iHorn is made from a General Electric Company Ammeter which was made in 1909. It is an immaculately beautiful tool used as a measuring instrument used to measure the current in a circuit. Electric currents are measured in amperes, hence the name. By the late 19th century, improved instruments were designed which could be mounted in any position and allowed accurate measurements in electric power systems. The Thompspon Ammeter