Electrodes used in Voll electropuncture and vegatest should be made of copper. Measurements of the electrodes are not detrimental in making them work. Main electrode should have specifically designed end. It can be purchased or made from brass electrode used for welding (2.5 mm diameter). Inside the electrode is a mono-stable switch , which enables to report results of the diagnosis within the computer programme. Supporting electrode has been made with brass pipe (20 mm diameter). Inside this electrode testing samples will be placed, therefore one end of this electrode should be closed. Suggested length of the cables are 1 to 1.5 m.
The below film shows how to make wooden electrodes.
Ryodoraku electrode made with plastic specimen and copper pipe (15 mm diameter).