A Pocket-Book of Mechanical Engineering Tables, Data, Formulas, Theory, and Examples, for Engineers and Students

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This book is the result of the writer's endeavor to compact the greater part of the reference information usually required by mechanical engineers and students into a volume whose dimensions permit of its being carried in the pocket without inconvenience.

In its preparation he has consulted standard treatises and reference books, the transactions of engineering societies, and his own memoranda, which extend back over a period of fifteen years. A large amount of valuable and timely matter has been obtained from the columns of technical periodicals and also from the catalogues which manufacturers have courteously placed at his disposition.

While very great care has been taken in the preparation of manuscript and in the reading of proofs, it is nevertheless a regrettable fact that first editions are not always infallible, and the writer will accordingly be under obligations to those who will call his attention to such errors in statement or typography as may come to their notice.

Suggestions indicating how subsequent editions may be made of greater usefulness are respectfully solicited.

All matter contained in the first edition has been carefully scrutinized for errors, comparisons having been made with the original sources of the information from which it was compiled, as it was found that nearly all the inaccuracies occurred through recopying from notes.

A number of alterations have been made in the text, certain data have been replaced by fresher matter, and the work has been enlarged by the addition of an appendix in which new subjects are treated, some omissions supplied, and much space given to recent and valuable matter relating particularly to Machine Design.