The mru-200 GPS is the extended version of the Version MRU-200 with integrated GPS module for position storage of test objects. It is also the only earthing measuring device on the market, which all possible measuring methods in the field of ground measurements. Highlight is the lightning protection method for inspection of lightning arrester systems under almost real-world conditions. With the comprehensive range of accessories such as current pliers, 25 m long measuring lines and auxiliary electrode, earthing measurements and resistance measurements in any environment and of any earthing and lightning protection system even without separating of the erders can easily be carried out. In addition, a professional grounding analysis on the basis of the measured interference voltages and interference frequencies can be carried out. This text is machine translated.