The paper consists of several parts. In the first part the technical and legalaspects of the measurement plot in the Single Area Payment Scheme (SJPO) waredescribed. Measurement methods of areas where specified which are used in orderto control compliance declaration of the farmer with the facts. Then compared theGarmin GPS receivers manually according to the criteria of suitability in the workSJPO. The most important of them is: function measurement of area, trace consisting of ten thousand points and correction WASS/EGNOS. The analysis of statisticalplot measured 240 GPSmap76 receiver was a part of summary and conclusion.Carried out measurements confirmed a thesis: an increase in the number ofmeasurements improves the accuracy of parcel areas. ...