This clock has a glass dome, a glass torsion pendulum, and the works are supported by glass columns. The dome is 18 inches tall and rests on a thick solid cherry base, with leveling screws. It took nearly two years to build.
The pendulum disk is made of glass for temperature insensitivity and for looks, too. It is supported on both ends by 400-day clock nickel alloy suspension springs. The bottom suspension spring is spring-loaded to help keep the pendulum steady. The device on top of the pendulum is the fine rate regulator. The cone-shaped screw moves weights in and out to make rate adjustments. It has three changeable weights on its perimeter for gross timekeeping adjustment.
The pendulum is driven by a chronometer escapement of special design. The escape wheel has seven legs fastened to a tube with a jewel at either end. There are fewer teeth than on a normal chronometer escape wheel to allow for larger clearances between the escape wheel and the impulse pallet on the pendulum -- this to lessen sensitivity to pendulum vibration.
The escape wheel hangs on the escape wheel arbor suspended by threads. The threads are twisted around a cone on the escape wheel arbor. As the escape wheel turns, it descends on its own weight, driving the pendulum. When the escape wheel arrives at the bottom of its range, it presses a lever which unlocks the gear train to turn the escape wheel arbor, which rewinds the escape wheel up to the top of its range. At the same time, the hands are advanced one minute.

The escape wheel thus acts as a remontoire weight, which supplies a constant force to the pendulum. This keeps its arc of rotation constant, for increased accuracy. The impulse pallet is made from a needle, and can be seen on the left. The detent pallet is similarly made, and can be seen to its right.

The clock is driven by a three-pound weight, which falls 11 inches to drive it for one week. The weight moves on a vertical rod, to prevent it from crashing into glass, if bumped. The movement is upside down, with the mainwheel at the top. The escape wheel arbor at the bottom is vertical, being driven by a contrate wheel.

The mainwheel contains both an internal winding ratchet and an internal maintaining spring, which keeps power on the gear train during winding.