Hose level
A hose level is an (old) measuring device to determine the difference in height between two points on the same horizontal plane, the hydrostatic leveling , which makes use of the physical principle of the communicating tubes . The same height levels can thus be transmitted over large distances.
The hose level is an instrument for hydrostatic height measurement. Here, the liquid level in two standing vessels (e.g. glass cylinders) or in relation to a fixed reference, which are connected to one another with a hose, is the same. The hose level is particularly used in construction to carry out height transfers without direct line of sight or to monitor the height of buildings.
Scales hose (water) in the construction surveying used in the so-called shell of a house on the walls at one meter height meter level ablate. It does not matter how the floor is made, because it is not used as a reference system.
Conventional hose levels consist of two vessels with graduations (usually mm). The two vessels are open at the top and have openings in the bottom through which they are connected to a hose. The vascular hose system is filled with water. Because the water level is the same in both vessels, differences in height can be read or transmitted. Before using the water level of the hose level as a marking, the hose must be absolutely free of air bubbles.
With digital hose levels , the hose is also filled with a liquid. Pressure differences are determined via a measuring transducer, from which height differences can in turn be calculated. With these electronic pressure hose scales , height differences in the 0.01 mm range can be measured over distances of up to 250 m.
The Chorobates used by the Romans is based on a similar principle .
