What is the accuracy of a level, and the longer the level, the more accurate it is
The accuracy of a level refers to the axial movement of the level bubble and the tilt angle when the center of the bubble coincides with the symmetrical center of the left and right marking lines when the level is at a specified horizontal tilt angle. Generally, the accuracy of a level is related to multiple factors. So, what is the accuracy of a level?
The accuracy classification of a level is expressed in numerical values, in mm/m. For example, a level with an accuracy of 0.75mm/m is used, and the error per m measured by the level does not exceed 0.75mm. The accuracy of a level generally includes the following types: 0.25mm/m, angles expressed as 0.0143 °, 0.5mm/m, angles expressed as 0.0286 °, 0.75mm/m, angles expressed as 0.0430 °, 1mm/m, angles expressed as 0.0573 °, 1.5mm/m, angles expressed as 0.0859 °, 2mm/m, and angles expressed as 0.1146 °.
Is the longer the level, the more accurate it is
When measuring whether an object is in a horizontal state, a level is usually used, and it is necessary to choose a level with appropriate accuracy according to the job requirements. Many friends believe that the longer the level, the higher the accuracy level. Is this correct?
In fact, it is not necessarily true that the longer the level, the more accurate it is. It also depends on the object being measured itself. For example, if a shorter object is measured, a longer level may not be accurate. However, a level generally has several measurement points, both horizontally and vertically. There is also a type of long-distance level, which is composed of two parts that can be separated for measurement: the left and right rulers. This type of level can be used for both short distance measurement and long-distance measurement, and it is also relatively convenient to use.
In general, the longer the level, the more accurate it is. It also depends on the straightness of the material, the quality of the leveling bubble, the wall thickness of the ruler, and whether the base of the benchmark has been precisely milled. When selecting, a level with appropriate accuracy can be selected based on the needs of the measuring object and the actual situation.
