3B Scientific U8557170 Katter's Reversible Pendulum

Special form of physical pendulum for determining local acceleration due to gravity g. Pendulum rod with two fulcra plus one sliding and one fixed disc weight for adjusting the period of oscillation. When correctly adjusted, the pendulum will oscillate about both fulcra with the same period of oscillation. The pendulum rod exhibits particularly low friction and is suspended in a stable frame. In order to adjust orientation, the support is equipped with two adjustment screws and a spirit level. Includes mounting plate for light barrier.