DOT Survey (Georgia): Guidelines for Instrument Calibration Checks Mobile App

It is with the knowledge that this control will be propagated throughout the entire life of the project, that low, tolerances are set, high accuracy is achieved, and a QUALITY product produced. The primary horizontal and vertical control traverses established for the project are to be used as the principle control for all field and photogrammetric survey activities. This app includes a detailed Guidelines for Instrument Calibration Checks. A calibration instrument check should be done at least once per month to ensure that the total station is in proper adjustment. Checks should also be made before beginning a large survey or whenever the total station is suspected of having been jarred, or anytime there is suspicion that the instrument is out of calibration.