- Turn on the device.
- Charge the pen probe and calibrate it with filed 14k yellow gold (AGT1 PLUS), 14k, 10k, 14k, 18k, 22k, 24k or platinum (AGT2), 14k or 18k yellow gold (AGT3).
- First file the jewelry. Touch the pen probe to the filed area on the article being tested.
- Instantly read the results on the tester's display.