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8a

From Reinhardt's Technic of Mechanical Drafting, published in 1909 by The Engineering News Publishing Company, New York. By Chas. W. Reinhardt.

 

All books published before 1923 (in most countries) are in the public domain . This includes the United States.

 

Feel free to use this image in your work. No credit is necessary, although it is appreciated.

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Taken on March 8, 2011