ETH: Orthogonalplanimeter, ca. 1851

* **Metadata**  
* Title: Orthogonal planimeter by Kaspar Wetli (1822-1889)
* Inventory number: ETHZ_IFGP_0231
* Date: 1849-1851
* Dimensions: 46.5 x 36.7 x 23.5 cm
* Material: Metal, glass, wire
* Manufacturer: Jakob Goldschmid
* Modeller: ikonaut
* Licence: CC-BY-SA
* Model type: object
* Method used: Photogrammetry
* Measurement setup: White screen background, Tripod-based camera and lighting, …