what is a level ruler?

It is a measuring instrument that uses the principle of liquid level to display the angular displacement with a level bubble, and measures the deviation degree of the relative horizontal position, vertical position and inclined position of the measured surface. The level ruler has a level bubble, which can be used for inspection, measurement, marking, equipment installation, and industrial engineering construction. It can be used for both short-distance measurement and long-distance measurement, and also solves the shortcomings of existing level instruments that can only measure in open areas and is difficult to measure in narrow areas, and has accurate measurement, low cost, convenient portability, and economical application.

The level ruler can be used in…
It can be used not only for short-distance and long-distance measurement, but also for narrow area measurement. It has a wide range of application scenarios, is easy to carry, has high precision, and is economical and applicable.
The level has a level bubble, which can be used for inspection, measurement, marking, equipment installation, and industrial engineering construction;

Use of Levels
Generally, the horizontal ruler is in the center horizontally and vertically, and the angled blisters are naturally in the center. When using it, put it on the object to be measured, which side the water bubble is biased to, it means that the side is higher, that is, the height of the side needs to be lowered, or the height of the opposite side should be increased; the water bubble displayed in the center means that the measured object is in the The orientation is horizontal now.
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The horizontal glass tube is used to measure the horizontal plane, and the vertical glass tube is used to measure the vertical plane. If the bubble is in the center, it is horizontal. If the bubble is off the center, the plane is not horizontal. the
Note: According to the principle of determining a plane by two intersecting lines, it is necessary to measure at two non-parallel positions in the same plane to determine the level of the plane.

How to calibrate the level error

(1) Zero error calibration of horizontal position
After the bubble is stabilized, read a at one end of the bubble at the horizontal position, then turn the level ruler 180 degrees, place it on the original position of the plate, record the reading b at the other end of the bubble according to the side of the first reading, and take two readings Half of the difference is zero error.
(2) Zero error calibration of vertical position
Adjust the dividing head so that one end of the bubble at the horizontal position is aligned with the long engraved line, turn the dividing head 90 degrees, read c at the corresponding end of the bubble at the vertical position, and add c to the zero error of the horizontal position to get the lead Zero error in vertical position.
(3) Calibration of the zero error at the 45-degree position
Adjust the dividing head so that one end of the bubble at the horizontal position is aligned with the long engraved line, turn the dividing head 45 degrees, read d at the corresponding end of the bubble at the 45 degree position, and add d to the zero error of the horizontal position to get 45 Zero position error in degrees.

Points to Note for Level Rulers
before use
Wash the anti-rust oil of the level gauge with non-corrosive gasoline, and wipe it clean with absorbent cotton gauze.
when using it
1. Be aware of temperature changes. It must be isolated from heat and wind sources. If the ambient temperature of use is different from the temperature of storage environment, it is necessary to place the level on the flat plate in the use environment for 2 hours before using it, which may occasionally cause errors in measurement;
2. When measuring, the level must be placed stably, the water bubble should not swing, and the reading must be done after the bubble is completely still.
After use
The surface of the level must be wiped clean and coated with anhydrous, acid-free anti-rust oil, and stored in a clean and dry place.