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English
Calibration procedure
When all the necessary calibration settings have been made, return to 
the main calibration screen. Press the measure button to initiate the 
calibration measurement. When the measurement is complete, the 
measured Ra value will be displayed as well as the calculated error 
(%). 
To complete the calibration process, tap the calibration icon. The 
‘calibration complete’ screen will be displayed to confirm calibration 
has been successful. Tap back arrow icon to go back to previous menu.