A lifting device comprising a first unit and a second unit , the first unit is configured to catch and/or hold an object and provide power for moving the object in a vertical direction, and the second unit is configured to control a vertical position of the object, wherein the first unit comprises: - a stationary vertically extending part , a horizontally extending part and a lifting part such as a hoisting tube comprising a first and a second attachment position, at the first attachment position the lifting part is attached or fixed to the horizontally extending part and at the second attachment position the lifting part is attached or fixed to a longitudinal member , the longitudinal member comprises a catching part such as a suction pad, characterised in that : - a sliding member is configured to slide in two directions between a first and a second end position along the longitudinal member , and the actual position of the sliding member relative to the longitudinal member is configured to determine the lifting power of the lifting part ; wherein the second unit comprises a first attachment position and a second attachment position and - the first attachment position is fixed to the vertically extending part of the first unit ; - the second attachment position is fixed to the sliding member of the first unit by a rigid joint configured to transfer all movements induced at the second attachment position by the second unit to the sliding member . wherein the first unit comprises: - a stationary vertically extending part , a horizontally extending part and a lifting part such as a hoisting tube comprising a first and a second attachment position, at the first attachment position the lifting part is attached or fixed to the horizontally extending part and at the second attachment position the lifting part is attached or fixed to a longitudinal member , the longitudinal member comprises a catching part such as a suction pad, characterised in that : - a sliding member is configured to slide in two directions between a first and a second end position along the longitudinal member , and the actual position of the sliding member relative to the longitudinal member is configured to determine the lifting power of the lifting part ; - a stationary vertically extending part , a horizontally extending part and a lifting part such as a hoisting tube comprising a first and a second attachment position, at the first attachment position the lifting part is attached or fixed to the horizontally extending part and at the second attachment position the lifting part is attached or fixed to a longitudinal member , the longitudinal member comprises a catching part such as a suction pad, characterised in that : - a sliding member is configured to slide in two directions between a first and a second end position along the longitudinal member , and the actual position of the sliding member relative to the longitudinal member is configured to determine the lifting power of the lifting part ; wherein the second unit comprises a first attachment position and a second attachment position and - the first attachment position is fixed to the vertically extending part of the first unit ; - the second attachment position is fixed to the sliding member of the first unit by a rigid joint configured to transfer all movements induced at the second attachment position by the second unit to the sliding member . - the first attachment position is fixed to the vertically extending part of the first unit ; - the second attachment position is fixed to the sliding member of the first unit by a rigid joint configured to transfer all movements induced at the second attachment position by the second unit to the sliding member . <EOS>