The carbo-arm 400s, 400m, 400l, 400xl with the stroke 528 mm - 1731 mm is designed to hold hand screwdrivers. It can only absorb reaction torques if the torque axis is perpendicular to the extension axis. The laser distance measuring system is used for position determination in the extension direction. A bracket is provided for the distance measuring system swivel axis A1 - A2. A spring balancer type 933x-9340, manufactured by Tecna, acts as a retraction mechanism. The corresponding spring balancer must be ordered separately. Includes rotary encoder and IO-Link Master.