Lanyard with fine adjustment system for precise work positioning Can be used in double mode, on the harness lateral attachment points, to distribute the weight on the belt (user has weight on his feet): length is adjusted by pressing on the pivoting cam) Can be used in single mode, on the harness ventral attachment point, to distribute weight between the waistbelt and the leg loops (user is suspended): length is adjusted by operating the handle while holding the free end of the lanyard (it is necessary to open the device to remove the protective sheath) Removable protective sheath protects the rope from abrasive surfaces and allows smooth rope glide