The RoboDot Ground Control Point Stencil can be used to mark the RoboDot's location for future reference.  It can also be used to create GCPs that can be tied to a photogrammetry project. 
 
The stencil makes it very easy to accurately place a RoboDot over a point of interest. The arrows on the stencil line up exactly to the RoboDots corner points.
 
Use spray paint with this stencil to create the cross marking on a flat surface.