Skroutz.eu

Metal construction, but what I received was unstable in its operation (it was moving right-left). It stabilized relatively easily with 2 additional washers on the shaft.

Excellent. I measured a deviation of less than 1 millimeter at 10 meters. The pendulum locks so it can be used as a guide on inclined surfaces. The magnets of the mounting base on a metal rod are indeed not enough, but they can be improved by adding extra neodymium magnets.