Made in Chicago by the Jewell Electrical Instrument Company in the 1930's. In this lot you will receive: Amperes Pattern No 78 gauge (AC), Volts Pattern No 88 gauge (DC), and Galvanometer Pattern No 88 (DC). Terrific vintage faces with the Bentley Code wings. The mounting diameter is 2-3/4 inch (the OD of the housing) and the face diameter is 3-1/2 inches for each piece. Untested. The voltmeter has a sticker on the back saying it was repaired 6-20-1938. If not used for an instrument, think about your next industrial project, rat rod car project, radio, airplane, your office, bar, or general decor! I will have other gauges for sale and will combine shipping. Take a look!