Contact Resistance Tester
- GDHL Series Circuit Breaker Contact Resistance Tester Micro ohmmeter
- GDHL-100A Portable High Voltage Circuit Breaker Contact Resistance Tester
- 100A - 600A Three-phase Intelligent Loop Resistance Tester for Switch control/contact resistance test
- GDHL 100A, 200A, 400A Circuit Breaker Contact Resistance Tester, Loop Resistance Tester