The Megger DET3TC offers the solution for users who are concerned about the inherent dangers and potential cost implications of disconnection of the earth spike.
 
Megger DET3TC features:
IP54 rated
2 and 3 point testing
Selectable 25 V or 50 V output
Complete with lead and stake kit
Simple one button operation
Hardwearing carry case
Delivered with calibration certificate
Attached Rod Technique (ART)