• When checking the calibration of the measuring instrument against a standard potentiometer, account must be taken of [ or one should take account of ( or take into account )] the effect of ...
• As with all internal combustion engines, allowance must be made for the effects of ( or the effect of ... should be allowed for ) every ...
• In the comparison of these results, consideration must be given to the temperature difference.
• Piezo-electric crystals tend to be very sensitive to temperature changes and this must be allowed for during calibration. The period of time to which measurements relate also deserves consideration .
• In adding ... due regard must be had to direction.