with power switch ,measuring easily changable,data export,each side with a fixed shift Item name Measuring range(mm) resolution (mm)Digital scale unit (vertical) 0-100 0.01 0-150 0.01 0-200 0.01 0-300 0.01 0-400 0.01 0-500 0.01 0-600 0.01 0-700 0.01 0-800 0.01 0-900 0.01 0-1200 0.01 0-1500 0.01 0-2000 0.01