12 Clamp-on Ground Resistance Tester Model 64172.5 Control FeaturesMEMHOLDOFFAMRSET-UP6 0 0 VCA TI V40A123 894567Figure 2-21. Head Assembly: Consists of two individually shielded magnetic cores2. Guard: Safety guard; do not place hands above this guard3. Lever: Opens or closes the jaws4. : Toggles display backlight ON/OFF5. MEM: Stores measurements into memory6. ►: Navigates and validates measurement displays7. OLED Display: Crisp, clean and bright display8. Rotary Switch: Selects measurement functions and instrument SET-UP9. HOLD: Freezes last measured value on the displayTurns Bluetooth ON/OFF (when switch is set to MR or SET-UP)www. GlobalTestSupply .comFind Quality Products Online at: sales@GlobalTestSupply.com