The magnetism can be activated by simply turning a knob

also on the floor and in frames

It is not electromagnetism

notat om returgrunden

on the whiteboard or blackboard

Undersænket pottemagnet, Ø13 mm. - Neodymium ludo mini The magnetism can be activatedCountersunk magnets Diameter: 1. 3 cm. Height: 0. 45 cm. Screw hole: 3 mm. Strength: approx. 3 kg. These countersunk pot magnets (also known as shallow magnets) can be tightened with a countersunk screw (3 mm). A strong neodymium magnet encased in a steel cap (pot). The steel improves the adhesiveness of the magnet as it has direct contact with a thick steel surface. Strength is measured directly on a thick, magnetic steel plate. The strength of the