Analogue displays as GUI's seem to be rare in Scilab, so here is a example how
to create a tachometer.
Note: By exchanging the background image, this display could be used for any
Does not need an image as background anymore.
Comment lines should be all in english now.
Function made from version 2.
To call the function type: tachometer(var1....var12);
Explanations of the variable see function code.