Blocks,50 x 40 x 30 mm, softwood, hardwood, paraffin wax, aluminium, iron & foamed polystyrene.

Blocks, 20 x 20 x 100 mm perspex, glass, slate, aluminium, softwood, marble.

Blocks, lead 50 x 50 x 20 mm, aluminium 50 x 50 x 80 mm, hardwood 50 x 50 x 200 mm, brass 20 x 20 x 50 mm, iron 40 x 40 x 20 mm.