Device to Verify The Lenz’s Law (for high school) Manufacturer,Supplier and Exporter in India

Consist of two identical aluminum rings fixed to the ends on the aluminum rocker arm, a tripod with a needle and a stand.
One ring with a slot.
The beam is mounted on a tripod needle.
The length of rocking arm in the range of 130 to 180 mm
The diameter of the rings is 25 mm