A digital pocket scale is a precision electronic weighing device designed to accurately measure the mass of small objects. To ensure the accuracy and stability of a digital pocket scale, users need to perform self-calibration operations regularly. Self-calibration adjusts the measurement accuracy of the digital scale through a built-in calibration procedure and a specific calibration weight.

Prepare the calibration weight: Users need to prepare a calibration weight of known accurate weight, usually half or one-third of the maximum measurement range of the digital scale, to ensure the accuracy of the calibration.

Enter calibration mode: Most digital pocket scales have a dedicated calibration mode, which users can enter by pressing a specific button or key combination. After entering calibration mode, the digital scale will display "CAL" or other corresponding prompts.

Place the calibration weight: Users need to place the prepared calibration weight on the weighing platform of the digital scale and wait for the digital scale to stably display the weight. During this process, the digital scale automatically recognizes the calibration weight and adjusts it.

Complete calibration: Once the digital scale displays a stable calibration weight, the user can confirm and complete the calibration process. The digital scale automatically saves the calibration data and exits calibration mode.

Verify calibration results: To ensure the accuracy of the calibration, the user can use other objects of known weight for verification. If the weight displayed by the digital scale matches the actual weight, the calibration is successful.