PIRA Classification: 5H50.30
Description: A small coil of wire is free to rotate within a large coil of wire. A separate battery and switch are connected to both the large and small coils. The switch on the small coil is turned on. When the tap switch to the larger coil is closed, the smaller coil rotates.
Special Instructions: None
Condition: Good
Setup time: 2 minutes
Safety Issues: None