Earth Testers
| Supplier | Model No. | Description |
| Megger | DET5-4 | Earth Tester 4 post |
| Prova | PROVA 5600 | Non-contact ground electrode tester |
| Prova | Prova_5601 | Clamp on Non-Contact Earth Resistance Tester |
| AEMC | 3731 | Clamp on Ground Resistance Tester |
| AEMC | 4500 | Ground Resistance Tester, 2, 3 or 4 post, high accuracy |
| AEMC | 4610 | AEMC 4610 Ground Resistance Tester |
| AEMC | 4620 | Digital Ground Resistance Tester |