Description
Square framed clock mechanism with the cogs and gears held between two square sheets of metal, with one copper alloy ring with a screw thread on the inside. Used with a 6" equatorial telescope by Thomas Cooke.
Driving Clock for Telescope, by Emco, London, c. 1860
Inventory Number 54598
Acknowledgement: © History of Science Museum, University of Oxford, inv.54598
