Isabellenhütte Heusler is one of the oldest industrial companies which is first mentioned as early as 1482. The company named in 1728 as “Isabelle Kupferhütte” and in 1827 the Heusler family acquired the company. The company specialized in very high precision resistive elements and measuring technology. LEM SA (Liaisons Electroniques-Mécaniques) established in 1972 in Switzerland. The company specialized in high-quality transducers for measuring electrical parameters. LEM has a wide market for different areas. TE Connectivity is a global company specialized in different areas like sensor and connectivity solutions for data, signals and power systems. The company manufactures also current.