Extech 382357 Clamp-on Ground Resistance Tester

 with 0.002Ohms maximum resolution
• True RMS AC Leakage current range of 0.2mA to 30A with 1.000mA maximum resolution
• Programmable Datalogging with 116 data points
• Programmable Hi/Lo Alarm
• 0.9" Jaw Size for Large Ground Rods
• Simplifies ground resistance measurements on multiple point ground systems
• Verification resistors confirm accuracy of meter
• Automatic Self Calibration when powered on
• 9999 Count High Contrast LCD Display
• Electrical Noise Detection feature prevents inaccurate readings
• Data Hold and Continuity Beeper
• Complete with 9V battery, Resistance check plate and carrying case