Why is the products' error range less than 1%, but it is indicated as error range with CW ±1.5% and CCW ±2.5%?

Due to different using methods for each user will affect the performance of torque values. With the increasing use of time, the sensor will appear a slight error. To avoid misunderstand of readers, we indicate the error range with CW ±1.5% and CCW ±2.5%.