The Academy of Science examined and approved the clock in August 1749. The Duc de Chaulnes presented it to Louis XV on 7 September 1750. It was put in the clock cabinet in 1754. The room actually got its name because of the large astronomical clock dials in the wainscoting. These clocks displayed the sunrises and moonrises every day. The king's scientific interests led him to upgrade that daily experience by having the Passemant clock installed in the room.