Rating Assembly 3 1/2" has a 3 1/2" threaded rod with a brass rating nut. Rating Assembly 3 1/2" can be adjusted to control the rate of swing of the pendulum.
Rating Assembly 3 1/2" has a 3 1/2" threaded rod with a brass rating nut. Rating Assembly 3 1/2" can be adjusted to control the rate of swing of the pendulum.