Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 103
r Fig. 189. 4-5, b-a. Erect perpendiculars at the extremities of the lines, 2, 3, 4, 5, anda. On the perpendicular a &, lay off 1 « from the plot and connect h 1. The 3.23 -(5)-3.55 -(3)-1.29 -(2)-2.70 H … Fig. 190. intersections of the perpendiculars by this line will determine how much eachof the points of the plot is to be moved on the parallels to 1 « to distributethe error. The dotted lines on the figure show the corrected outline. If theamount by which the plot fails to close is large, the plot…
Mechanical drawing
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