This is used to compare the magnetic moments of magnets and to determine moment of inertia. It consists of a box with glass doors. The top of case is slotted and carries a glass tube fitted with a simple torsion head to support a stirrup to carry magnets etc. etc. The base of the box is marked with longitudinal index line. Supplied complete with one each 50 and 100 mm bar magnets and one each 50 and 100 mm brass bars.
