Rake leveling is an additional tool that allows you to perform geodetic work in construction, as well as used in geological or topographical studies.
With the help of it, the difference in altitude is recorded. The leveling rail is a rectangular plane with a scale placed on it, which is marked with a certain price of division.
Varieties
There are four types of this device:
- The rack is made of wood with the possibility of unfolding;
- telescopic;
- fiberglass rake;
- high-precision invar.
Description
Modern products can be produced fordigital and conventional levels. Digital racks are used for levels that can read BAR-codes that are applied to the surface of this device. With the help of such devices, the distance to the device and the difference in height are determined. Also, these devices have on the reverse side of the usual graduation, as a result of which they can be used as simple levels.
- Rake leveling, made of wood,folds in the center. The length of each section is about 1.5 meters. Wooden slats are heavier than telescopic slats. But they have a more reliable folding mechanism in comparison with the specified analog, which has a play in the mechanism fixing button. Such a rake leveling is a dielectric. This is true when working near open wires and high-voltage power lines.
- Rake leveling telescopic in modernperformance is made of lightweight materials, such as plastic or aluminum, which is very convenient to use due to low weight. They have a round level, which makes it possible to put this device strictly vertically. Often used rails, having a length of 3, 4 and 5 m. When folded, they have a length of not more than 1.5 meters. The scale for such products is applied from both sides (one is placed millimeter for close work, and on the other - in the form of checkers for use at long distances).
- The fiberglass rail is used in working withdigital level. Like all of the above devices, it has two-way markings. On the one hand, like a normal level, on the other - a metric scale. Such a rack is made of a dielectric material called fiberglass. Therefore, it can be used near high-voltage electric lines.
- Invarious slats are used to performhigh-precision survey of terrain. Here, the accuracy of determining the marks is not more than one millimeter. Its body is made of wood and covered with invar ribbon. These racks make a length of 3 m. Due to their ease of use and light weight, they are in great demand.
The result
Now you know what leveling can berail. How to use it, known topographers, cartographers, builders, miners. However, everyone can learn this skill. Sometimes another name for this device is used - construction rake, or geodesic. The price for such a product depends on its size and accuracy of divisions.
