GRT300: 4-Wire Earth Ground Resistance Tester

Measures earth ground resistance in 4 ranges from 2 to 2000 Ohm

• 4-wire, 3-wire, and 2-wire testing
• Large dual line LCD
• Automatic I (current) and P (potential) spike check
• Test Hold function for easy operation
• Autoranging, Automatic Zero adjustment, Data Hold and Auto Power off
• AC Earth Voltage
• Overrange and low battery indication
• Complete with test leads with alligator clips, 4 auxiliary earth bars, hard carrying case, and eight 1.5V AA batteries