Hermann Hankel (14 February 1839 – 29 August 1873) was a German mathematician who was born in Halle, Germany and died in Schramberg (near Tübingen), Imperial Germany.
They were deployed on the lines from Schiltach to Schramberg and from Waldenburg to Künzelsau, but proved to have very high maintenance costs, with the result that three of them were retired by the Württemberg State Railways.