After each measurement of the wear position of the presetting device, i.e. after each calibration procedure, preferably a calibration counter is incremented, as a result of which it is known how often the manual pliers was calibrated after {HEAD ~ its manufacture}, or how often {TAIL ~ the calibration counter} was calibrated following servicing 
After each measurement of the wear position of the presetting device , i.e. after each calibration procedure , preferably a calibration counter is incremented , as a result of which it is known how often the manual pliers was calibrated after { HEAD ~ its manufacture } , or how often { TAIL ~ the calibration counter } was calibrated following servicing
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