An archery range finder that is mounted to a bow sight. The method includes a first analyte-specific receptor that contains at least two binding sites for the analyte, and a second analyte-specific receptor that selectively binds to an aggregate arrangement of at least two analyte molecules bound to the first receptor. With the valve, very short switching times, in particular less than 0. Each end portion of the handle has first and second preformed fold lines formed in it.