Curvimeter

Looked a bit complicated in the beginning, but the assemblance help was great!! Love the idea and also that it has a practical application. Pieces were very easy to remove from the sheets and smooth-fitting into one another. Was great fun to assemble

ce curvimètre est très sympa !

Fairly easy to build, and the gear / cam mechanism is fascinating. I especially appreciated the contruction aids for getting the rubber edge onto the wheel.