Instruction of disabled men in motion picture projection, an elementary text book (1919)

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Vlll MOTION PICTURE PROJECTION good working knowledge of actual projection. He must make a certain grade in his work both in theory and practice before the Institute permits him to apply for his license. The equipment at the disposal of the students in the Institute was generously loaned by the Nicholas Power Company, the Simplex Machine Company, the United Theatre Equipment Corporation through its President Mr. Hallberg, Mr. William Fox, Mr. B. F. Wyler, and others. It is valued at nine thousand dollars and consists of everything necessary to a mastery of the art of projection. The equipment includes the following: Power's Motor Driver Projection Machine. Simplex Machine installed in Asbestos Booth. Acme Portable Machine equipped with Mazda Lamp. Cosmograph Portable Machine with Pencil Arc. Hallberg Motor Generator. Hallberg Economizer. Hallberg Regulator for Mazda Lamp. Step-Up and Step-Down Transformers. Rheostats. Mercury Arc Rectifier. Stereopticons. Distributing Board fitted with the various House Wiring Systems, Ammeters and Voltmeters. Various makes of Screens. Film Measuring, Cleaning and Re-winding Machines. Vivatarg Apparatus.