Answer: calibrating

AnswerCrossword Clue
calibratingCALIBRATE, to determine true values by comparison with an accurate standard
calibratingMark (a gauge or instrument) with a standard scale of readings
calibratingCorrelate the readings of (an instrument) with those of a standard in order to check the instrument's accuracy
calibratingAdjust (experimental results) to take external factors into account or to allow comparison with other data