Special Features for the Flexible Templates

The sight plane is chosen using the next outermost templates. At those two templates the distance from the sight line point to the middle point is chosen to be 600mm. After correcting the template curve for the plate thickness these two distances may differ from 600mm.

The sight line plane is chosen so, that the middle points are as close as possible to the mid points of the templates counted between the delimiting seams.

The frame closest to the middle of the plate is chosen as the base frame.