Model : RPMC 1700-4A Display : 7” multi color touch screen display Contact Range : -12,000 to + 12,000 rpm Non contact range : -1,80,000 to + 1,80,000 rpm Resolution : 0.01 rpm Display Stability : ± 0.02 rpm (contact) & ± 0.2 rpm(non contact) Stability : ± 0.2 rpm (contact) & ± 2 rpm(non contact) Accuracy : ± 0.5 rpm ( contact) & ± 5 rpm (non contact) Noise level : < 50 dB Dimension : 440(W) x 260 (D) x 203(H) mm Supply : 230AC