Universal testing apparatus for the exact determination of the forming angle and tensile tests on plastic welding joints and testing pieces in accordance with DVS 2203 part 2 and 5. According to the demands the servo technology allows very exact testing speeds which can be indicated as forming angle or as draft and tensile force with different measuring methods. Due to the simple handling facilities and the transportable design it can be used for lab examinations as well as on building sites. The apparatus has a robust construction and can build up tensile forces up to 8 KN. The limitation of the available measuring path at 300 mm is standard but can be extended up to 700 mm for special applications.