Electronic blister blister is active in the market in recent years, the new level of bubble, it is based on the level of the bubble, the use of the change of capacitance, resistance or with the perspective of photoelectric conversion to blister change into electrical signals, relevant procedures can be driven by the CPU.Mainly used in electronic theodolite, total station, automatic anping, lineup instrument, etc.Electronic part compensator is now billiton PuKang, foif, west, south, Europe light wave, bo fly one of the important suppliers.