Model: VICTOR6234P Measuring range: 2.5 to 99999 rev / min Accuracy: 0.05% + 1 Resolution: Contact speed: 0.1 RPM Contact line speed: 0.01m / min Time base: 4MHz quartz crystal oscillator Display: 5-bit with a backlit LCD Maximum display: 40000 Power: 4 1.5V AA (UM-3) battery Overall dimensions: 157 64 31mm Weight: about 200g