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This machine is designed to run down inclined wires and to record its exact position at the end of each second. It consists of an electro-mangnet mounted on pulleys. One pulley connects with one terminal of the wires of the electro-magnet and the other with the other terminal; the pulleys being insulated from each other. The starting wire is shaped like this figure. -One end of the starting wire (s. w.) is in front and lies under the marking wire, or the wire at the top of the armature. Thedoi:10.1111/j.1949-8594.1912.tb03550.x fatcat:jf3ogfuy4jdethxu6k76sdqbxq