To compare the magnetic moments of magnets and to determine moment of inertia etc. Consisting of a box with sliding glass doors. The top of the case is slotted and carries a glass tube fitted wih a simple torsion head ot support, by means of nylon fibre, a stirrup to carry magnets etc.

The base of the box is marked with a longitudinal index line.

Internal dimensions of the box 160x66x66 mm.

Length of tube 145 mm approx.

Size of stirrup 50mm, long x 45mm high approx.

Complete with one each 50 and 100 mm bar magnets and one each 50 and 100 mm brass bars.