rotates in the direction of the arrow 38 when the zero mark 39 is reached an impulse is delivered to the flip flop 32 via the slider 29 as a result of which the latter is set on 34 high 34 as a result of further rotation of the disc 16 in the direction of the arrow 38 an impulse is delivered via the slider 29 to the flip flop 33 whereupon this impulse together with the impulse from the flip flop 32 is carried through and the on off switch is opened so that the motor 12 stops since the motor 12 is mechanically connected with the sin cos potentiometer 13 voltages now queue up at the output of the potentiometer 13 which cause the coordinate motors of the cutting machine to move in such a way that the scanning head and the tool which is mechanically or electrically coupled with it is moved in the direction of the arrow 40 to the contour 35 to be scanned the direction 40 is also labeled as the direction of cut in the illustrated design of fig3 the markings 39 and 30a are so arranged with respect to the sliders 29a and 29b that the direction of cut 40 occurs at 45 degrees from the vertical depending upon the drawn contour of the template to be scanned it might be desirable to select other scanning mechanisms it is hereto proposed according to the invention that a reset impulse be delivered via the key 41 to the flip flop 33 whereupon the flip flop 33 is switched to 34 low 34 and the switch 34 is closed as.