The area of the wound is traced carefully on transparent paper, and then computed by using a mathematical machine, called a planimeter, which measures areas.
"Manhood of Humanity."
Alfred Korzybski
The planimeter affords a much quicker and more accurate method of obtaining the average steam pressure from a diagram.
"Modern Machine-Shop Practice, Volumes I and II"
Joshua Rose
The combined capacity of catchment reservoirs which could be constructed in these drainage areas is considerably more than the volume of the heaviest known rainfall, that of October 8-11, 1903. In the description of reservoir possibilities in the following pages the data with reference to many of the basins are computed from planimeter and other measurements, the United States Geological Survey topographic maps being used as a base.
"The Passaic Flood of 1903"
Marshall Ora Leighton