Apparatus for attaching an object to a support , said apparatus comprising: a main body , upper and lower dies adapted to deform said object, at least one of said dies being movable relative to said main body to approach the other die, , and a measuring means (16, 20; 18, 22) adapted to measure the position of said movable die relative to said main body and/or relative to said other die, characterized by a force limiting means adapted to take up a driving force (F1) exerted by a driving source and to transfer said driving force by rotation into an attaching force (F2) for moving said movable die, said force limiting means comprising a compensator spring adapted to limit said attaching force (F2) to a predetermined value, and a monitoring means adapted to receive an output signal of said measuring means (16, 20; 18, 22) and to perform at least one of the following: a) permanently monitoring the position of said movable die relative to said main body and/or to said other die, during a process of attaching said object to said support , b) storing said monitored position in at least one predetermined moment during the attaching process, c) determining in at least one predetermined moment during the attaching process whether the distance ( Δ G1 + Δ G2) between said upper and lower dies is below a lower limit, and d) determining in at least one predetermined moment during the attaching process whether the distance ( Δ G1 + Δ G2) between said upper and lower dies is beyond an upper limit. a main body , upper and lower dies adapted to deform said object, at least one of said dies being movable relative to said main body to approach the other die, , and a measuring means (16, 20; 18, 22) adapted to measure the position of said movable die relative to said main body and/or relative to said other die, characterized by a force limiting means adapted to take up a driving force (F1) exerted by a driving source and to transfer said driving force by rotation into an attaching force (F2) for moving said movable die, said force limiting means comprising a compensator spring adapted to limit said attaching force (F2) to a predetermined value, and a monitoring means adapted to receive an output signal of said measuring means (16, 20; 18, 22) and to perform at least one of the following: a) permanently monitoring the position of said movable die relative to said main body and/or to said other die, during a process of attaching said object to said support , b) storing said monitored position in at least one predetermined moment during the attaching process, c) determining in at least one predetermined moment during the attaching process whether the distance ( Δ G1 + Δ G2) between said upper and lower dies is below a lower limit, and d) determining in at least one predetermined moment during the attaching process whether the distance ( Δ G1 + Δ G2) between said upper and lower dies is beyond an upper limit. a) permanently monitoring the position of said movable die relative to said main body and/or to said other die, during a process of attaching said object to said support , b) storing said monitored position in at least one predetermined moment during the attaching process, c) determining in at least one predetermined moment during the attaching process whether the distance ( Δ G1 + Δ G2) between said upper and lower dies is below a lower limit, and d) determining in at least one predetermined moment during the attaching process whether the distance ( Δ G1 + Δ G2) between said upper and lower dies is beyond an upper limit. <EOS>