For the calibration of dowsing measurements, a practical standard "yardstick" has been adopted that involves dowsing pure geometry: in particular a dot (0-dimensional), as this produces a dowsable line, the furthest point of which is a precise measureable boundary. The advantages of this technique include an easy to produce universal standard, which is very practical, provides precise measurements, and is easily repeatable. The validation of this technique is proven as members of a group dowse the same phenomenon. Successful ground breaking research using this yardstick includes quantifying how dowsing measurements vary over time, and how earth energies and cosmic factors change dowsed dimensions.