There is no way to quickly fix the point, it depends on the tacit cooperation between the mirror runner and the emcee. The temple should know the approximate orientation of the instrument after angle adjustment. The emcee should inform the other party about centimeters as accurately as possible. The host should not ask the prism to be completely centered at the beginning, as long as the instrument can read the data. At this point, the mirror runner had better stand on the same line of the prism and the instrument for observation, and move the prism on this line according to the distance quoted by the MC. In addition, the mirror runner had better know the length of each step. I usually take a big step. (If I go forward 13 meters, 58 meters, then I will go 13 steps, and the mirror is estimated to be 58 centimeters. ) usually the error before and after is within 30 cm. In that case, it will be much faster. In short, the more you practice, the more proficient you become. In addition, the mirror runner had better have a topographic map for setting out, from which you can see which point is where and which is faster.

* * * study together and work smoothly.