, or Protraction, in Surveying, the act of plotting or laying down the dimensions taken in the field, by means of a Protractor, &c: Protracting makes one part of surveying.
Protracting-Pin, a fine pointed pin, or needle, fitted into a handle, used to prick off degrees and minutes from the limb of the Protractor.
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Entry taken from A Mathematical and Philosophical Dictionary, by Charles Hutton, 1796.
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