I learned this from my helicopter mechanic who' s wrenches had to be certified. They had to have the certified sticker to be used on an aircraft. He used to say "there's some things you just don't want to come loose!" Peter

I always return my torque wrenches back to zero. it's just a habit I dont know im doing it automatically. When torquing tires and wheels I will usually return it to zero while walking to the other wheels causing me to reset it everytime.