Comprising of a transparent plate having a matrix of small circular chambers, each chamber containing an iron rod and functioning independently with as a plotting compass. This plate is an excellent tool to view magnetic fields and due to its transparent nature is suitable for OHPs. Size is 250 x 250 mm
Essential cookies support shopping and remember your choice. With your permission, analytics measure performance and behaviour (including heatmaps and session recordings), marketing supports advertising, and preferences remember optional settings. Choose which optional technologies may run.