How this unit differs from conventional bump steer gauges:

The device accuracy is variable by increasing the target distance.
It is a compact unit, 1/2 the size of a attaché case.
Does not require large bulky frame work.
Does not require large specialized plates to be mounted to the hubs.
Universal to all race cars.
Since you are viewing a laser beam spot on a target you have a VISUAL change in bump steer vs. having to watch confusing dial indicator movement.
Shows camber change due to bump which can not be done by any other bump steer gauge.
The precision of the unit never changes and is never affected by weather or temperature.
By utilizing graph paper for a target, engineers can plot bump steer and camber change simultaneously.