Total Station, namely Electronic Total Station, is a high-tech measuring instrument integrating light, machine and electricity. It is a surveying instrument system integrating horizontal Angle, vertical Angle, distance (slant distance, flat distance) and height difference measurement.Compared with the optical theodolite, the electronic theodolite changes the optical dial to the photoelectric scanning dial, and replaces the artificial optical micrometer reading with automatic recording and display reading, which simplifies the Angle measurement and avoids the generation of reading error.It is called total station because it can complete the measurement work of the station after one time placing the instrument.

Total station instrument is a kind of precision surveying instrument, which is widely used in the field of precision engineering surveying or deformation monitoring, such as the construction of large above-ground buildings and underground tunnels.Slip ring is the heart part inside.The limited space require slip ring has slim dimension.