Sunken swarf board and 2 types of magnets

MACHINE TRANSLATION (not authorised yet)

Disc (15.5 x 9 x 1 cm) with ferromagnetic filings sunk inside in a special liquid. Since the plate is made of transparent acrylic, help can be presented on the overhead projector for demonstration purposes! Included are 2 different magnets - horseshoes and bar magnets (11 and 6 cm). Very useful didactic aid for the experience of magnetism (nature and physics) in schools, including observation of magnetic field lines.