Level level is a measuring instrument, which is used to measure and mark axis, height, angle, etc. The level is composed of a long rod (level) and the instrument parts on it. The instrument part includes bubble level meter with high horizontal precision, bubble vertical meter with high vertical precision, angle measuring instrument and digital display. The leveler can measure the levelness and height difference of the ground by adjusting the height and horizontal direction of the pole, and the instrument part can measure the angle and direction.