How do you calibrate a hunter wheel alignment?

In most cases, they are calibrated by a trained service technician who puts the heads on a fixture and "zero's" the sensors. This is done through a special sequence that is built into the administration features of the machine.

On late models - about year 2002 and newer, a user calibration feature is available. This requires placing the heads on a vehicle, taking a snapshot of the raw data, then swapping them around on the wheels. Another snapshot is taken and the machine compares the reading and calibrates as necessary.

With a little training the end user could calibrate his onw heads on older systems, but will require procuring a calibration fixture which may be hard to locate.

I would suspect most techs would charge around $100 to do a cal, but that may be off a little.