How is a large electroscope constructed using 78-cm-long wires for the leaves?

A large electroscope can be constructed using 78-cm-long wires for the leaves by attaching the wires to a metal rod or plate at the top, and then separating the wires at the bottom to form the leaves. The wires should be insulated and lightweight to allow for easy movement. This setup allows for the leaves to easily detect and respond to electric charges.