International projectionist (Oct 1931-Sept 1933)

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March 1932 INTERNATIONAL PROJECTIONIST Strong Electric Change-overs FOR REAR SHUTTER MOUNTING The "Super" For ntaunting on a rear-shutter Simplex or at the port opening for use with any projector Specifications: Cast aluminum housing. Black crakle finish. Aluminum blades. Asbestos covering. 110-volt coils (specify whether A. C. or D. C. wanted). Patented automatic current cut-off which cuts the current off the coils automatically. You Can't Burn Out the Coils Furnished with 5-foot lead wires and conduit. A space is provided to install optical glass when mounted at the port opening. $40 each FOR FRONT WALL MOUNTING The "Special" A new member of the famous Strong family of high-grade electrical projection equipment Exactly the same in every way as The "Super" except that it does not include the automatic current cut-off feature. The greatest value in an electric change-over available today. All orders should specify whether for rear shutter or port hole mounting and whether A. C. or D. C. coils are desired. 130 each The name "Strong" on a change-over has stood for precision projection work for more than 15 years. There is no substitute for a Strong Change-over. Sold and Serviced by Alt Leading Dealers. Manufactured by ESSANNAY ELECTRIC MFG. CO. 2809 West Van Biiren St. Chicago, niinois