[Stephen Hobley] has been experimenting with an electromagnetic pendulum in order to build himself ... has nearly all of the clock works assembled. Crafted out of wood, he uses a 15-tooth primary ...

Pendulum clocks ... so [PuzzLEGO] set about building a working example with Lego. The rear view reveals the escapement built from Lego Technic parts. The core of the clock is the escapement ...