Operation Guide:
1、Power-on and Warm-up
Keystroke once；Wait until  READY！ is displayed on the LCD. Now the gauge is ready for measurements.
2、Zeroing
Keystroke twice; when  BASE ZERO  is displayed, place flat on Fe or Al base; hold steady. After measurement is obtained,  DONE  is shown and gauge beeps. Then lift gauge.
Note: Please conduct zeroing process after changing base. Zeroing process could be repeated for better results.
3、Unit Change
Keystroke three times; convert from ums to mils or vice versa.
4、Reset
Keystroke four times，Wait until  RESET  is displayed; after gauge resets, users can conduct zeroing process if necessary.
Materials
Gauge Reference Fe and Al Base
Certified Plastic Shim Battery etc.