Testo measurement technology

Testo is a global leader in the design and manufacturing of portable and stationary measurement technology. Founded in the Black Forest region of Germany, the company initially gained recognition for creating the first electronic clinical thermometer. Since then, it has expanded its product catalog to include high-precision instruments for HVAC, refrigeration, emission monitoring, and food safety.

Today, Testo operates as a global enterprise with a strong manufacturing footprint in Germany, particularly at its headquarters in Lenzkirch and Titisee. To support global demand, the company also maintains production facilities in China and other international locations. The brand is recognized for its engineering excellence and commitment to innovation in digital measurement solutions.

Ownership remains private, with Testo SE & Co. KGaA serving as the parent company. The brand has evolved from a small startup into a multinational market leader, maintaining its German engineering roots while building a vast network of subsidiaries and distributors across all continents.