Original oil and gas oilfield drilling industry trade magazine vintage ad for THE ELECTRIC CONTROLLER AND MANUFACTURING COMPANY of Cleveland, OH. Flame Proof Because Oil Immersed Automatic Compensators and Master Switches. Old 1930 petroleum equipment magazine advertisement.
Original industrial vintage magazine ad for ELECTRIC CONTROLLER AND MANUFACTURING COMPANY. EC and M Starter without fuses. For positive personnel safety, the ZHA is equipped with a 3 way doorlat..
Original vintage magazine ad for ELECTRIC CONTROLLER MANUFACTURING COMPANY. Exactly the right starter for any location with EC and M's line of high voltage starters. A Division of t..
Original vintage magazine ad for ELECTRIC CONTROLLER MANUFACTURING COMPANY. High voltage starters, why oil men specify EC and M. Designed for easier installation, inspection and mainten..