calibration card

calibration card

A card indicating instrument error and usually displayed near the instrument. It gives the corrected value of the instrument indicated reading. In some cases, the correction to be applied to the indicated reading instrument to get the correct value may be given. In the case of a compass, it is called a compass correction card or a deviation card. See also compass correction card and deviation card.
References in periodicals archive ?
What needs to be briefed to pilots is for them to "write down the corrective heading the standby compass reads for all heading points listed on the calibration card.
Calibration is performed by feeding a paper calibration card through the unit.
Calibration is simply performed by feeding a paper calibration card through the unit.