steampunk - calculator Scheutz

http://en.wikipedia.org/wiki/Per_Georg_Scheutz

Scheutzian calculation engine, invented in 1837 and finalized in 1843. This machine, which he constructed with his son Edvard Scheutz, was based on Charles Babbage's difference engine.

An improved model, roughly the size of a piano, was created in 1853 and subsequently demonstrated at the World's Fair in Paris, 1855. The machine was then sold to the British government in 1859. Scheutz created yet another machine in 1860, selling it to the United States.

The devices were used for creating logarithmic tables.

Drawing of the mechanical calculating machine 1867