Dynomet portable road dyno installed on rollers

If you own the Dynomet portable dyno, by purchasing an extra sensor it is possible to use the Dynomet in conjunction with a set rollers.
A rotating mass of 500 kg will measure up to 350 hp, 1000 kg. - 700 hp. Two of the rollers, beside each other, must be coupled.

The sensor is installed on one of the axle ends.
The sensor is connected to the signal processor with a cable and the signal processor is connected to a computer