Built in power supply with 220 V AC input voltage.
Two copper rods fixed vertically in parallel between the base and the stand and freely to rotate while still in a parallel situation.
Dimension of the rods: approx.300 mm length

Physics School Lab Equipment Suppliers in India 

Ltekonline are the manufacturers of Force Between Two Parallel Currents Demonstrator Electromagnetic Lab used to demonstrate engineering principles in Engineering Colleges, Engineering Schools and Physics Lab Experiments for Engineering Teaching Lab in Universities