Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 64
Fig. 144. … Fig. 145 To divide a given line into any number of equal})arts (Fig. 145).Let A B be the line, and the number of parts be ten. Draw a perpendicu-lar at one extremity. A, of the line; with a plotting scale place the zero at theother extremity, B, of the line; make the mark 10on the scale coincide…
Mechanical drawing
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