J. B. Hampton Pocket Manual for the Practical Mechanic

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Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. For years I have been contriving to complete a new and simple rule that would teach the craft a shorter and much needed way to work, so that more work might be done in a day than heretofore, thus bringing more wages and satisfaction to the mechanic. I have met persons who, for years, had tried to learn the French rule for drafting, but gave it up in despair. It was too long and too hard to learn. The French rule is more adapted to architecture and is highly useful, more so than many mechanics can comprehend.