BROSA force measuring pins MEMS are a further development of the tried and tested BROSA load pins and enable the line load in slewing crane booms to be determined directly. An integrated MEMS sensor allows the suspended load to be calculated depending on the boom position. The line load is correctly determined and output directly in the sensor at all times, regardless of the boom position. A calibration that corresponds to the respective installation situation ensures precise measurement and therefore high measuring accuracy.