BESUCHEN SIE UNS AUF DER Werkstattmesse in Dortmund VOM 30.08.2024 – 01.09.2024 am Stand von Truck Fit
BESUCHEN SIE UNS AUF DER Automechanika VOM 10.09.2024 – 14.09.2024
BESUCHEN SIE UNS AUF DER IAA Hannover 2024 bei unserem Kooperationspartner Alltrucks GmbH in Halle 12 Stand B40 vom 18.09.2024 – 19.09.2024.
BESUCHEN SIE UNS AUF DER Werkstattmesse in München VOM 18.10.2024 – 20.10.2024 am Stand von Truck Fit

Your Partner for

Taxi Rollertest Bench.

About us

We are the inventors and manufacturers of the “Semmler Roller”. Dynamometers all over the world are equipped with our roller. More than 1500 truck workshops from Germany to Dubai trust our calibrated measuring technology. Semmler GmbH is officially commissioned by the Ministry of Transport to authorise workshops for tachograph testing for 25 years. We have also built up a network of more than 500 test centres in Europe.

Founded 50 years ago as a truck workshop, the family-run business is today being run by the third generation. We set the standard with precision. Quick and accurate. And of course, Made in Germany.

more Our Brochure

Training courses

In order to check and calibrate truck tachometers, workshop employees must attend training courses. This is regulated by law. TachoControl offers two training courses: A basic module for beginners and a further training course for tachometer testers, which must be refreshed every three years in this country.

Courses can be attended all over Germany and Austria. Duration: one to five days, depending on the format. Participation is certified.



Whether analogue, digital or smart, the Semmler measuring devices check every type of tachograph – regardless of the manufacturer. With Semmler dynamometers, vehicle manufacturers, authorities and workshops can procure accurate certainty for trucks, taxis or rental cars. Based on the Road Traffic Act [Straßenverkehrsordnung] and EU law. Smart and fast.

In addition, workshops can become test centres. Semmler authorises plants worldwide, adapted to the respective national law and inclusive of the course certificate. We ensure precision in the transport business nationwide with modern technology.

Tacho Control Global

The Global Tachograph Network was initiated 15 years ago. Today, far more than 1000 workshops throughout Europe use the advantages of this close-meshed network. Countries such as South Africa and Dubai are also connected – more will follow.

Become a member of the global network and secure special conditions, training schedules and the TachoControl service.


RALF SEMMLER, Automotive Master