Used to show how metal wire resistance depends on length, cross-sectional area and material. Made of plastic and equipped with 6 tensioned wires connected with 4 mm banana plugs.

• Wire material / cross-section:

Iron / 0,4 mm
Constantan / 0,3 mm
Constantan / 0,4 mm
Constantan / 0,5 mm
Copper / 0,4 mm
Copper / 0,8 mm