1.. Classification according to the working principle

(1) Mechanical spirit level

Mechanical level can be divided into three types: bar level (also known as fitter level), frame level and group level. They are indicated by level bubble, so mechanical level is also called level level or bubble type. Spirit level. The strip spirit level is a rectangular level measuring instrument with a base measuring surface, and the level bubble is fixed or can be adjusted relative to the base measuring surface. A frame-type spirit level is a frame-type level measuring instrument with a base measuring surface and two vertical measuring surfaces, and the level bubble is fixed or can be adjusted relative to the base measuring surface. The combination level is a level measuring instrument with a base measuring surface to measure the adjustment of the micro-spiral pair relative to the base measuring surface.

(2) Electronic spirit level

There are two types of electronic spirit level: inductive and capacitive. According to different measurement directions, they can be divided into one-dimensional and two-dimensional electronic spirit levels. The measuring part of the electronic level is mainly composed of a housing, a micrometer device and an electrode water bubble sensor. The electronic bubble sensor works similarly to the spirit level of a general spirit level, but with a different structure.

2. Classification by shape

According to the shape of the spirit level, it can be divided into universal spirit level, cylindrical spirit level, integrated spirit level, mini spirit level, camera spirit level, frame spirit level, and ruler spirit level.