Richardson's handbook of projection (1930)

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1294 HANDBOOK OF PROJECTION FOR it up" in the books, because you will of your own knowledge pretty well know what is wrong, and how to remedy it. We will now show you a series of photographs which will convey an idea of various items of RCA Photophone equipment. Figs. 467 and 468 show you the working side of a Simplex projector and the sound head, with the projector Figure 469. casing door and the sound head door both removed. Figs. 467 and 468 were one picture. We cut them in two so that the pictures would not be so much reduced in printing. As a matter of fact, Fig. 467 should sit on top of and join Fig. 468.