Lighting consultant Jules Fisher, original specs by Fred Wolff. Design later changed. Demonstrator has 41 stores for 12 channels. Display rack is wired to dimmers, uses 75w 130V R-30 FL lamps. Hand fabricated plug-in manual controller from the first Izenour remote system, at Yale, 1941.
Potentiometer is a radio volume control.
Indicator wheel calibrated 0-10, increments of 1. C-I production version of the controller, using an injected molding for the basic chassis. Flat slanted front, separate indicator wheel with 300 degrees of rotation for precision in calibration. Dispenses with the separate indicator wheel but uses a larger wheel for operation so that 20 or 40 increments can still be used with an operational movement of only 90 degrees. Large clear plastic controller wheels are operated over a 90 degree range, incremented 0-10 in quarter points.