مغناطيس مزدوج

Consists of two each of the seventeen blocks as follows:
Blocks, 50 x 40 x 30 mm – Softwood, Hardwood, Paraffin wax, Aluminium, Iron and Foamed Polystyrene.
Blocks, 20 x 20 x 100 mm – Perspex, Glass, Slate, Aluminium, Softwood, Marble.
Block, 50 x 50 x 20 mm – Lead.
Block, 50 x50 x 80 mm – Aluminium.
Block, 50 x 50 x 200 mm – Hardwood.
Block, 20 x 20 x 50 mm – Brass.
Block, 40 x 40 x 20 mm – Iron.