From Table 4, the error in distance (1-2) between control points (1) and (2) increases from GPS to Bing to GE to Garmin. Spatial Adjustment (Similarity) and Georeferencing tools use two control points to transform the coordinates. These tools preserve the relative geometry of the control points and scale (stretch) the source data to fit the geometry of the controls. This explains increasing the error in the transformed coordinates according to the increase of that distance error as shown in Figures 1-4. These two transformation tools scale the coordinates with the same amount in both X and Y axes, so the error in the transformed coordinates of any point is proportional to the distance to that point from the base control point