Witness pendulum of bronze

Bronze Pendulum with witness container.

In the bronze pendulum witness measuring about 2.2 cm x 1.5 cm and weighs about 15 grams.

It is composed of two parts Screw down, body and cover.

In the bronze pendulum there is a small cavity that allows the placement of materials as a witness, to improve reading.

This type of pendulum, with container witness indicated on the energy imparted to distances or work for readings in the need to strengthen the vibrations of the pendulum with some specific material.