... reliability for prolonged measure, which is widely used in electric power, telecommunications, meteorology, oil field, construction, lightning protection, ... unique function of wire resistance verification,more accurate on measuring on-site low value earth ground resistance, which can ... : 1PC, Tester bag: 1PC 3. Features: Boot Time: Self-test in 0.5 second, boot instantlyMeasuring Range: 0.01-1200 ...