... specifications: Max. impact energy: 300J Max. Impact height: 2000±5mm Hammer weight: 0.5,0.8,1.0,1.25,1 ... ,10.0,12.5,16.0kg,error is ± 0.5% Hammer model: d25d90 , error is ±1 Sample diameter: 10~1400mm Power ... mode. Operate easily. Single chip control. It can pick the hammer and display at real-time automatically. All the whole process ...