We are the inventor and manufacturer of the "Semmler role". We equip test benches worldwide with it. From Germany to Dubai, more than 3000 truck workshops, authorities trust our calibrated measuring technology. 
Officially commissioned by the Ministry of Transport, Semmler GmbH has been authorising workshops to inspect tachographs for 25 years. In addition, we have built up a network with more than 500 testing centres in Europe. Started 50 years ago as a truck workshop, the family business is now home to the third generation. We set the standard with precision. Fast and accurate. Of course Made in Germany.
The company is headquartered in Göppingen, Württemberg, at the foot of the Swabian Alb. From here, we set the standard with precision. All Semmler products measure extremely accurately and are manufactured in Germany. The basis for the success is the company's in-house expertise in the transport business – and the constant technological development of our smart TachoControl products.