![](https://coimages.sciencemuseumgroup.org.uk/74/294/medium_thumbnail_1990_0459__0002_.jpg)
Precision disc planimeter by Coradi
- Made:
- Zurich
![Precision disc planimeter by Coradi, no](https://coimages.sciencemuseumgroup.org.uk/354/613/medium_smg00049471.jpg)
Precision disc planimeter by Coradi, no. 3987, disc diameter 14cm; with dusting brush and 3 3/4" testing rule
Precision disc planimeter by Coradi, no. 3987, disc diameter 14cm; with dusting brush and 3 3/4" testing rule