An Electromagnetic Wrench, is a device used by Engineers and other scientific minds.
The basic principle is simple, a hand held device that emits an electromagnetic field to manipulate an object. The field can be emitted in an oscillating/fluctuating pattern, the complexity of which can often be controlled to achieve different affects. Because of its nature, it is useless against something that cannot hold a magnetic charge, such as wood.
It's most basic/common functions are...
- Moving/turning bolts/objects.
More advance functions include...
- Short Circuiting electronics
- Opening/locking doors.
- A light
- Yes, as you may have guessed, it is based on the Sonic Screwdriver.