The invention relates to a tine harrow-Eindringtiefenmessvorrichtung 2. In order to allow continuous measurement of the penetration depth of the harrow tines and hence an automatic adjustment of the depth of penetration even under changing ground conditions, the tine harrow-Eindringtiefenmessvorrichtung 2 a support 12, a pivotally mounted to the support 12 reference harrow tines 13 and a distance measuring device 14 adjacent to the reference comb tines 13 for measuring the distance to the surface of a floor to be machined 10, wherein a sensor 16 is provided for detecting the deflection of the reference Striegelzinkens 13 so that from the distance and the deflection of the penetration depth of the reference Striegelzinkens 13 is determined in the soil to be worked 10th
