■ Sensibility: 0.01mm/m(0.001°) ■ Accuracy:10mm range≤±0.01mm/m 10mm-50mm range≤±0.02mm/m ■ For use in setting machined surfaces precisely horizontal ■ With longitudinal level ■ Buttons: on/off, zero, mm/inch, save/mode, ABS 3.6V li-ion battery for 15 hours working ■ Memory: 6