according to measuring results produced by two or more gauging methods using different measuring principles, e.g. by both optical and mechanical gauging

Full Title

Automatic control or regulation of feed movement, cutting velocity or position of tool or work > while the tool acts upon the workpiece > Control or regulation of feed movement (B23Q15/12 takes precedence) > according to measuring results produced by two or more gauging methods using different measuring principles, e.g. by both optical and mechanical gauging