- Numeric Department - Systems Department About HEIDENHAIN: DR. JOHANNES HEIDENHAIN GmbH develops and manufactures linear encoders, angular encoders, rotary encoders, digital readouts and numerical controls. HEIDENHAIN delivers its products to manufacturers of machine tools and manufacturers of automated facilities and machines. Its products are commonly used in semiconductor and electronics manufacturing. Worldwide, HEIDENHAIN comprises approx. 7000 employees, 2600 of whom work in the main facility in Traunreut, Germany. About ETEL: ETEL is the world’s leading supplier for direct drive and motion systems. Founded in 1974 and headquartered in Switzerland employs about 400 dedicated employees.