@nash_15cl: ♦[Intuitive Design]:Our tester features an LCD display and LED make it easy to read your testing results.No need for a professional - the Tester Pen is easy to operate. Just turn it , lightly press the tip to the , and wait for the beep to know if it's real or . ♦[If it's Real ]:The professional Tester will lighted up over 9 and emits audible sounds. No reaction means the stone is a or simulant like cubic zirconium (CZ). ♦[Bare Hands Operation]: the tests be done by your bare hands. If you put your gloves, the metal alert will not function since a normal levelof your hands is necessary for operation. test be done by TWO hands, for hold the and for the tester. As for the hand which hold tester, you have to the electricity conductive panel the of the unit.If you test the just by hand, you will get a wrong result. ♦[Beeping Upon Startup]:Ensure correct installation and adequate power in the test pen . Also, clean the test pen probe as maintaining its cleanliness can testing efficacy.A beeping sound upon powering signifies the need for initialization settings. Consult the table the rear of the machine for the specific initialization settings considering the 's temperature and size. Adjust the initial number of illuminated lights by rotating the knob (the default setting is to have 4 lights illuminated at room temperature). ♦[High-Frequency Sound when Testing Metal]:The high-frequency sound during metal testing is due to the test pen's operational principle, which relies thermal conductivity to distinguish between and . Since metal possesses thermal conductivity similar to , it generates a high-frequency sound during testing. #Outdoors #knife #knifesharpening

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