This twin-axis goniometer provides accurate data related with flexion/extension and ulnar/radial deviation. With two attachment points to the body and a flexible beam, it enables high-performance uncompromised operation even in dynamic scenarios, without limiting the motion of the monitored subjects. Multiple size options are available, enabling placement in segments ranging from a finger (e.g. intermediate – proximal phalanges) to a leg (e.g. lower part of the femur – upper part of the tibia).