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The Boy Mechanic, Book 2

Part 3 — A Homemade Exerciser

Reading edition

A weight machine for exercising the muscles of the arms is easily constructed by using two screw hooks, 5 in. long, and two small pulleys, 2-1/2 in. in diameter. An awning pulley can be used for this purpose. The hole at the top of the hanger will allow the pulley to freely turn at almost any angle. A paving brick or a piece of metal can be used as a weight for each rope.—Contributed by Sterling R. Speirs, St. Louis, Mo.

Illustration from The Boy Mechanic, Book 2: 1000 Things for Boys to Do

The Yoke of the Pulley is so Arranged as to Make It Move in All Positions on the Hook

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