code: def set_calibration(self, delta: Point):
          
          self._calibrated_offset = Point(x=self._offset.x + delta.x,
                                          y=self._offset.y + delta.y,
                                          z=self._offset.z + delta.z)
          self._wells = self._build_wells()
docs: Called by save calibration in order to update the offset on the object.