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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _scale(self):
 """ Scaling factor for precision. """

        if self._scale_to_box:
            # scale vertices to approximately a cube to help with
            # numerical issues at very large/small scales
            scale = 100.0 / self.mesh.scale
        else:
            scale = 1.0
        return scale