Anemograph

Other examples of the application of electricity, are the Anemograph of Dumoncel, an instrument for measuring the direction, elevation, and force of the winds; a heat regulator for hot-houses and drying chambers; and a system of electric communication between railroad trains.

Two days later, Madigan's anemograph recorded winds of 100 miles per hour for the first time.

Almost as bad was the status of the wind data: of his six meteorographs, only one ("Hergesell 104") had a working anemometer, and that instrument lasted only five flights in summer 1907 before it was lost when a cable parted; it functioned principally to help him calibrate his procedure for estimating wind velocity aloft without an anemograph.