A gripper and a method of handling of loads (2A), especially easily damageable goods, with a gripper provided with arms (6A, 7A) capable of clamping the load by applying a compressive force to the load wherein the compressive force applied to the load is adjusted on the basis of the slippage measured with one or several rotatable slip sensors between the load and contact pads (8A, 9A) arranged in the arms, wherein the method comprises following steps: providing drive signals to one or several drive units arranged to rotate the rotating parts, like rollers, of the sensors, monitoring the rotation of the rotating parts by means of the information received from the sensors, and determining the proper operation of the sensors and / or the contact between the contact pads and the load by means of the rotation information.