The Analog Ground Resistance Tester Model 3620 performs ground resistance measurement from 0.5 to 1000 Ohm with speed and accuracy. The Model 3620 features three-terminal operation for fall-of-potential earth/ground resistance, and may also be used for 2-point tests.

• Measures soil resistivity (4-point)
• Measures ground resistance (2- and 3-point) method
• Large analog display
• Designed to reject high levels of noise and interference
• Battery powered
• Extremely simple to operate: connect-press-read
• Error indicator lights
• Rugged dustproof and rainproof case
• Color-coded terminals and lead identification