REVERSIBLE OR COMPOUND PENDULUM · This stand is suitable for all types of compound pendulums or Kater’s pendulums described on page no. 227. · Heavy, rigid cast iron/mild steel base ensuring excellent stability and vibration free operation. · The time period of the bifilar pendulum setup depends on the mass of the plate, the length and separation of the strings, the gravitational pull, and the moment of inertia of the plate. Adjusting any of these parameters will affect the oscillation period.