. English: Fleuron from book: A treatise of the mechanical powers. I. Of the lever, II. The wheel and axle, III. The pulley, IV. The screw, V. The wedge, and, VI. The inclined plane. To which are added, several useful improvements in mill work, bevel geer, friction, the best shape for teeth in wheels, &c. By John Imison. 231 A treatise of the mechanical powers Fleuron T055770-3

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