Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 84
"Some Observations on the use of Polar Planimeter," by Wal- ter W. Patch, Engineering News, April 13, 1899. Annual Report of the Chief of Engineers, U. S. Army, 1893, p. 199 1, contains a description of the Coradi Rolling Planimeter, by H. M. Marshall, Asst. Engineer. "Theory of the Polar… … Fig. 1. and profiles, acreage of land, indicator, diagrams, etc. It will mechanically add consecutive areas and express results in any de- sired denomination. Its results can be corrected for a known ex- pansion or contraction of paper, but, unfortunately, not for errors in original notes and in…
Engineering
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