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         This is a modified Graham-style clock escapement with a fifteen-tooth escape wheel. The escape teeth have impulse faces that create lock (two degrees), like a club-tooth escape wheel in a Swiss lever watch escapement, and have a span of four degrees each. This design allows the pallets to be designed as symmetrically as possible. The pallets have curved (equidistant) locking faces to prevent recoil, and a span of six degrees each. There are therefore two degrees of drop on each side. The impulse face angle of each pallet is forty-five degrees, which is ideal. The escape wheel has been designed so that the escapement could have a self-adjusting beat feature, found in modern clocks. The pendulum has an amplitude of oscillation of ten degrees from one side to the other.





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