The photo of the Abt's point from
J.Hovorka jr. and the photo of the bogie of T426.0 from J.Hejzlar were used
for the reconstruction.
Sorry, the view angle does not correspond, but, on the other
hand, I wanted clearly to show whole process.
Go through whole proces several times. The page trasitions are
much faster, when all the necessary files get into the browser's cache.