Set of 8. Made from brass, copper, iron, plastic, aluminium, nickel, lead and zinc.
Supplied in a plastic box.
Can also be used for experiments on the electrochemical series.

For demonstrating the force on a conductor in a magnetic field.

As 327000, but sold as a pair mounted in 50 x 50 mm slides without glass. 1 pair.

Unmounted polarising filters for producing plane-polarised light.These quality filters block the light when positioned at 90 degrees to each other(transmitting only 0.005%).