MRU-200 is the only meter in the market which uses all measurement methods.
Possible measurements:

earth resistance measurment with 2-pole, 3-pole,4-pole method,
impulse earth impedance measurement, two kinds of measuring impulse 4/10?s, 10/350?s,
earth resistance measurement without disconnecting measured earths (using clamp),
two clamps earth resistance measurement without auxiliary test probs,
earth resistivity measurement,
continuity measurement,
leakage current measurement.