![File:Compensating polar planimeter. - DPLA - 459872423875f728f8d96e1c94c95abc (page 1).jpg - Wikimedia Commons File:Compensating polar planimeter. - DPLA - 459872423875f728f8d96e1c94c95abc (page 1).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/2/23/Compensating_polar_planimeter._-_DPLA_-_459872423875f728f8d96e1c94c95abc_%28page_1%29.jpg)
File:Compensating polar planimeter. - DPLA - 459872423875f728f8d96e1c94c95abc (page 1).jpg - Wikimedia Commons
discover__civil - Civil Engineer Rocks 👷👷👷 . . . A planimeter, also known as a platometer, is a measuring instrument used to determine the area of an arbitrary two-dimensional shape. . . .
![Mathematical Treasure: Polar Planimeter Invented by Jacob Amsler | Mathematical Association of America Mathematical Treasure: Polar Planimeter Invented by Jacob Amsler | Mathematical Association of America](https://maa.org/sites/default/files/images/upload_library/46/Smithsonian/NMAH-AHB2013q009202.jpg)