2020/6/16
The staff readings are taken as follows:
(1) The instrument is set up and carefully leveled.
(2) The staff is held verticall......
2020/6/16
Global Positioning System (GPS) is developed by U.S. Defense department and is called Navigational System with Time and Ranging Global Positioni......
2020/6/15
If you want to know where to put up a fence so that you don't encroach into your neighbor's yard, you do a survey, which is a graphical repres......
2020/6/15
Total station is a lightweight, compact and fully integrated electronic instrument combing the capability of an EDM and an angular measuring ins......
2020/6/12
A leveling plate is used under a structural steel column or other type of construction element that must be erected both level and plumb. Many t......