A&D Weighing GF-32K - Manual (Page 32)

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CAL key..........To cancel the correction and display the next
menu item of the function table.
Step 10 Press the CAL key to return the weighing mode.
Step 11 Press the
CAL key to calibrate the balance using the internal mass.
Step 12 Place the external weight on the pan and confirm that the correction has been
performed properly. In this example, confirm that the value displayed is within the
range that is described at "Accuracy after calibration using the internal mass" of "20.
Specification ". If the value is incorrect, repeat the correction.