44 ms·
Also interesting is https://en.wikipedia.org/wiki/Opisometer https://en.wikipedia.org/wiki/Opisometer
by kozak 9y ago
Also interesting is https://en.wikipedia.org/wiki/Opisometer https://en.wikipedia.org/wiki/Opisometer
- cstaecker 9y agoI got you: http://www.youtube.com/watch?v=ifKrwF47uP8 http://www.youtube.com/watch?v=ifKrwF47uP8
- hammock 9y agoIt's like a small version of a Rolatape (used for measuring race courses etc) http://www.rolatape.com/us/en/home/measuring-wheels.html http://www.rolatape.com/us/en/home/measuring-wheels.html
- Someone 9y agoThat one is easy to understand. hettps://en.wikipedia.org/wiki/Planimeter is more interesting: trace the perimeter to measure an area.