Multi-functional Level

Turning the dial to the horizontal position allows reading the angle. It requires one 10*10*29 bubble level, one 100*50mm square ruler, and several magnets with a diameter of 8mm and a thickness of 3mm. In actual testing, arranging the magnets as shown in the diagram provides sufficient magnetic force for adsorption; additional slots can be used to add more magnets to increase suction. The bubble level installation may require a slight sanding of the edges (3D printed right angles cannot be perfectly square; a slight scrape with a blade will suffice. The dimensions have tolerance, so it will fit snugly without glue).