The article discusses the features of the operational and technological assessment of agricultural machinery. Research has been carried out and a technical tool has been developed that allows timing of technological operations in determining the operational and technological indicators of an agricultural machine. To determine such indicators as the distance traveled, speed and performance, a global navigation satellite system is used with the ability to generate vehicle movement tracks in an Internet application. The use of the proposed device will reduce subjective errors in the timing of operations and speed up testing of agricultural units.