Level is a measuring instrument that uses the principle of liquid level to directly display the angular displacement with the level bubble and measure the deviation degree of the relative horizontal position, plumb position and inclined position of the measured surface.
This level can be used for short distance measurement, and can be used for long-distance measurement, but also to solve the existing level can only be measured in open land, narrow place measurement difficult shortcomings, and accurate measurement, low cost, easy to carry, economical and applicable.