Scroll saw pattern

The Dimetrodon lived between 280 and 265 million years ago It was among the largest predators of its day. It grew up to 9 8 ft m length The most distinctive characteristic of the Dimetrodon was the spectacular sail on its back The sail was dense with blood vessels and could have been used to regulate body temperatures allowing it to warm up or cool down quickly This unusual characteristic provided the Dimetrodon ample time to stalk and hunt prey.

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Wood Working for Amateur Craftsman

Wood Working for Amateur Craftsman

THIS book is one of the series of Handbooks on industrial subjects being published by the Popular Mechanics Company. Like Popular Mechanics Magazine, and like the other books in this series, it is written so you can understand it. The purpose of Popular Mechanics Handbooks is to supply a growing demand for high-class, up-to-date and accurate text-books, suitable for home study as well as for class use, on all mechanical subjects. The textand illustrations, in each instance, have been prepared expressly for this series by well known experts, and revised by the editor of Popular Mechanics.

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