Method of measurement; 2-electrode and 4-electrode; Electrical resistance measurement range; from 0.1 to 10,000 Ohms; Current frequency in the adjustable range; from 50 to 10,000 Hz; Resistivity determination error; 3 %; Minimum diameter of samples under study; 20 mm; Maximum diameter of samples under study; 103 mm; Minimum length of samples under study; 10 mm; Maximum length of samples under study; 103 mm;