The Analog Ground Resistance Tester Model 3620 performs ground resistance measurement from 0.5 to 1000 Ohms 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.
Features:
Fall-of-Potential method for 2- and 3-Point ground resistance tests
Direct reading on large analog display 0.5 to 1000? and easy 25? readings
Large 3.1" (77mm), easy-to-read scale for accurate readings
Built-in battery check
Three color-coded terminals
Large press-to-measure buttons
Portable and compact
Extremely simple to operate: connect - press - read
Designed to reject high levels of noise and interference
