Orthogonalplanimeter Von Kaspar Wetli (1822 1889), Gefertigt Von

3D Collection – Measuring Areas using the Orthogonal Planimeter

«Probably never before have so many surface areas of flat figures needed to be calculated, while we are occupied with the most detailed land surveys and the most significant road constructions.» Carl Maximilian von Bauernfeind: Die Planimeter von Ernst, Wetli und Hansen, welche den Flächeninhalt … Read more