Pendulum type of univesal impact tester is standardization testing method in internationally. It is use fixed pendulum height to do test which can achieve same impact velocity. The different strength of material can through different initial energy of hammer to do test. The pendulum energy can be change by hammer weight. QC-639F (G) digital type can change different pendulum and vise to do different testing method. This impact tester can proceed with parameters of abrasion loss, wind resistance and pendulum energy setting and calibration. High accuracy and easy operation, user can directly read test energy value from display. The standard model with activities transparent of protect cover which will be safety for using.