How to measure the ends of a building with a transparent hose?
The construction measure is often used in plastic pipe irrigation in horizontal pipe, using the principle of the connector of the connected device, both ends are open at both ends, water is the same height, close to the end of the elevation, the other end is close to the test site, slowly raise or drop action has a fixed elevation, when it has been on the elevation point the other end of the inside of the water level, height and elevation points are the same height.
Mark the ends of the transparent hose and then fill it with water. Then, bring the ends of the transparent hose filled with water into a U shape, and then move up and down to find the level at the ends of the hose. Do you understand?,
In construction, a transparent plastic pipe, that is, a horizontal tube, is measured by means of the connecting pipe
