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How to adjust the hand grinder to display three digits

1. First, press the "CE" key on the digital display table in the hand-held grinder to clear the currently displayed value.

2. Secondly, press "MANU" key to switch to manual operation mode.

3. Then manually adjust the dial to the corresponding three digits.

4. Finally, after displaying the three-digit value, press the "CE" key again to confirm the setting.