One of the most intriguing inventions of Abraham-Louis Breguet, first made c. 1805-10. The pendule sympathique consisted of a table or mantel clock with a special clip above to hold a watch during the night hours, in the manner of a watch stand. At a fixed hour the clock not only set the watch to time but also regulated any error. The clock was capable of regulating an error of up to 7 1/2 minutes and, as it was used daily, greater error was unlikely. Few of these clocks were made. Some were designed to wind the watch as well as to regulate it and set it to time. They appear to have been designed by Breguet to satisfy a challenge and to promote his business intersts, for Breguet was more than capable of making watches which did not require this kind of attention.