state the mount 14 can then be pivoted like a door the pivoting movement is set by an incline 55 together with adjusting screw 56 with a spring which is not illustrated pressing the mount or the incline 55 against the tip of the adjusting screw 56 it is thus possible to adjust the focus by rotating the adjusting screw 56 as already described in conjunction with fig1 the sensor holder 16 is mounted together with the sensor 15 by means of two pins 17 18 in holes 19 20 in the mount 14 the pins are flattened on one side and have a somewhat smaller diameter than the holes 19 and 20 into which threaded holes 61 to 64 in each case open from two sides further adjusting screws which cannot be seen in fig3 are located in these threaded holes 61 to 64 and act on the pins 17 18 fig1 from both sides so that lateral adjustment can be carried out in each of the holes 19 20 with adjustment in the opposite direction resulting in the line sensor being rotated the pin 17 is defined as a reference point with respect to the line in order that this pin adopts the correct position in the line direction during insertion into the mount 14 at least the.