Three-Wheeled Clock
An auction notice caught my eye, about a clock designed by Dr Franklin. Papers online has this: James Ferguson: Account of Franklin’s Three-Wheel Clock Printed in James Ferguson, Select Mechanical Exercises: Shewing how to construct different Clocks, Orreries, and Sun-Dials, on Plain and Easy Principles,…(Second edition, London, 1778), pp. 1-4. A Clock shewing the Hours, …