Helmholtz Coil Track System
 |
| The track system and carriage. |
The research lab I'm currently working for has a one-axis Helmholtz coil, which was originally built to test magnetometers. A Helmholtz coil pair, in theory, produces a uniform magnetic field along the axis between the two coils. Therefore, to test a magnetometer, there needs to be a mechanism to move it axially between the each coil.
