  The ancient geographic coordinates given for places of Great Britain in
Ptolemy's Geographike Hyphegesis are investigated by means of geodetic methods.
The turning of Scotland to the east is modelled by a three-dimensional
rotation. On the basis of different data sets of control points, the parameters
of the rotation are estimated by means of methods of adjustment theory.
Furthermore, a geodetic-statistical analysis method is applied to Scotland, by
which groups of places of homogenous distortions and modern counterparts of the
ancient places are determined. Based on the results of the investigations,
answers are given for questions concerning Ptolemaic positions unsolved so far.
