R and A Style Wall Clock Pendulum

R and A style clock pendulum with a hook top and the rating assembly on the bottom to regulate the time. The pendulum is 9 1/2 inches (241mm) long, with a 3 1/2 inch (90mm) wide bob. The R and A stand for Retard or Advance as the time keeping is controlled by the rating nut on the bottom of the bob, lower is slower.