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Appleton's cyclopaedia of drawing : designed as a text-book for the mechanic, architect, engineer, and surveyor : comprising geometrical projection, mechanical, architectural, and topographical drawing, perspective and isometry (1869)

Worthen, W. E. (William Ezra), 1819-1897 · New York : D. Appleton and Company · leaf 215

An illustration from Appleton's cyclopaedia of drawing : designed as a text-book for the mechanic, architect, engineer, and surveyor : comprising geometrical projection, mechanical, architectural, and topographical drawing, perspective and isometry, 1869, leaf 215
s a variety of pitches from } inch up to 3 inches, according to the following table, which shows the value of the circular pitches corresponding to the assigned values of m. 1 16 ; 20 14 12 9 6 7 10 2 3 4 5 S 1 Values of m. i Corresponding circular pitch in deci- ( .196 '.157 .224 .62S 1.047 202… … adopted as the term of comparison. The following are the proportions adopted by different workshops, some preferring one and some the other (fig. 266).

Mechanical drawing · Architectural drawing · Perspective · Projection

Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

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