SALE! Alicja Double Brass PendulumDouble is a pendulum made up of two pendulums: first is a larger, outside pendulum containing smaller one inside. In fact, tough, by connecting these two in different ways, you can obtain four different pendulums of different sizes and weights. The smaller pendulum, which is placed inside the bigger one, can be taken off not only to be used as a separate unity, but also to enlarge the witness chamber. Mostly the smaller pendulum is used for map