The simple finding of areas we may omit, as the planimeter will do that equally well.
"Scientific American Supplement, No. 794, March 21, 1891" by Various
He showed a polar planimeter in which the integrating surface is a sphere.
"Scientific American Supplement, No. 315, January 14, 1882" by Various
In this it differs from Amsler's planimeter.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4" by Various
Areas were measured with a planimeter; distances traveled by individuals were measured with a cartometer.
"Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz" by John M. Legler
At least two such readings were taken for each home range; then these planimeter values were converted into square feet.
"Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado" by Charles L. Douglas