New type of center for the hydraulic engineering triangulation point

摘要

1.The point centers of the design described can be used with advantage in constructing special types of triangulation (hydraulic engineering, bridge building, mining).2.This type of center can be used with slight modifications for marking in soft soils. It is necessary only to increase the length of the pylon, sinking its base to the necessary depth.3.The rig for fastening the instrument and target are simple to make, and reliable in service. Readings can be carried out with any type of instrument, using any design of target.