Testo SE & Co. KGaA, with its headquarters in Lenzkirch in the Black Forest, is a world market leader in the field of portable and stationary measurement solutions. In 34 subsidiary companies around the world, about 3.200 employees research, develop, produce and market for the high-tech company. The measurement technology expert convinces over 650,000 worldwide customers with highly precise measuring instruments and innovative solutions for the measurement data management of tomorrow.