Flexible measurement, fastening nut, nut knob loosening and tightening adjustment, can be fixed measurement, release both hands. Large screen display, clear readings, glass digital mirror 2 modes of switching metric and inch system. Push button operation, convenient and quick, portable button design, easy to control, zero point start, accurate data. Push the pulley, loose finger design, loose finger design does not hurt the ruler body, thumb gently up against, stainless steel forging. Where To Use: Perfect electronic vernier gauge for any small size measurement. It is the ideal measurement tool for a wide range of industrial, hobbyist and electrical applications.