The Brocot visible escapement

A mechanism can have its own beauty, hence those watches and clocks that are skeletonised.  However, the case and dial can also be aesthetically very pleasing.  I think a good compromise is the visible escapement.  The escape wheel ticks round locking and unlocking the jewelled pallet stones. A quadrant of the semicircular face of the pallet stone gives impulse to the assembly that keeps the pendulum swinging and drips out the power of the mainspring in a regular fashion, which, through the gearing of the clock and the length of the pendulum, gives accurate timekeeping.  Easy really!  Hats off to M. Louis Gabriel Brocot who designed this particular escapement in 1823 which was later improved by his son Achille.