Some construction projects on the site, we will often see a number of technical personnel strapped to a theodolite surveying instrument making sales, equipment they use is the theodolite. Theodolite initial invention has a close relationship with the sailing. In the 15th and 16th Centuries, Britain, France and some other countries, because of sailing and war, need to draw a variety of maps, charts. First mapping using the triangulation method is based on the observation results of the two known points on the theodolite Qingdao obtained third point distant position, but the absence of suitable devices, resulting in a limited angle measurement means, the accuracy is not high resettlement method thus draw topographic map accuracy is not high theodolite 1) Tripod tune into equal length and height for the operator theodolite, the instrument on a tripod, the instrument base surface is parallel with the top surface of the tripod. 2) The instrument dance placed on the station, head on after roughly estimated, a steady-foot step and adjust the optical plummet eyepiece (see crosshairs) and objective (see the station), with both hands put a frame around the feet, side to side, Grossly coincides with the intersection of the crosshairs allows the station, put stability and real step foot frame. 3) telescopic tripod legs to level the circular level 4) will set the standard pipe parallel to the two flat spiral, leveling vial. 5) pan alidade 90 degrees, with a third screw leveling vial. 6) Check the optical plummet, if a small amount of deviation of the laser theodolite, you can open a connection to spiral pan base, making precise alignment, tighten the screw connection, and then check the level bubble is centered. Laser theodolite theodolite _ _ Jinke instrumentation provided by the Instrument Co., Ltd. Qingdao Branch. Instrument Co., Ltd. Qingdao Branch (www.qdjk17.com) strong, credible, in Qingdao, Shandong analytical instruments industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jinke instrumentation and you work into the brilliant, for a better future!