If the compass is near the motors, then the effect of the motors when standing still, running or tilted up singly or as a pair has to be noted.
Ukuba isalathi sikhombi sisecaleni kwemoto, izinto zemoto xa imile, ibaleka okanye ukuthambekisa nganye-nganye okanye izinto ezihamba ngambini kufuneka zijongiwe.