A spirit level is a commonly used measuring tool for measuring small angles. In the machinery industry and instrument manufacturing, it is used to measure the inclination angle with respect to the horizontal position, the flatness and straightness of the guide rails of machine tools, and the horizontal and vertical positions of the equipment installation. According to the shape of the spirit level, it can be divided into two types: frame-type spirit level and ruler-type spirit level; according to the fixing method of the level, it can be divided into: adjustable spirit level and non-adjustable spirit level.
The spirit level is mainly used to check the straightness of the guide rails of various machine tools and other types of equipment and the horizontal and vertical positions of the equipment installation. It can also be used for small angle measurement and working surfaces with V-grooves. It can also measure the parallelism of installation of cylindrical workpieces, as well as the horizontal and vertical positions of installation. The spirit level is a precision measuring tool indispensable for measuring the horizontality and verticality of mechanical equipment.