Descriptions

Apparatus to investigate the dependency of electrical resistance on conductor length, conductor cross-section and material. Four wires are laid out side by side on a wooden base and both ends connect to 4 mm sockets.
Wire specimens:

Copper     20 SWG,
Copper     30 SWG,
Nichrome  20 SWG,
Nichrome  30 SWG,
Wire lengths: 600 mm
Weight: approx. 1.35 kg