Whether it is a traditional spirit level or an electronic spirit level, the principle is based on the principle of liquid level, that is, in a closed container, as the container is tilted, the liquid inside will also be tilted, and -Keep it level.
The level has a level bubble. The level bubble is a closed arc-shaped container. The inside of the container is filled with liquid that will not freeze, has good fluidity, can fluoresce, and has good stability; when the level bubble is in a horizontal position, the bubble will It occupies the highest position in the tube. If the horizontal bubble is inclined to one end, the bubble will move to the highest position of the other end, so the position of the bubble in the horizontal bubble also reflects the inclination of the measured object.
