engine dyno dynamometer 1,crane scale. 2,manufacturer. 3,long battery life. 4,dyna link. engine dyno dynamometer1,crane scale.2,manufacturer.3,long ... battery life.4,dyna link.Standard Features:Rugged construction. Accuracy: 0.05% of capacity ... mechanical keys:”ON/OFF”,”ZERO”,”PEAK” and ”Unit Change”. RF wireless palm indicator. engine dyno dynamometer