Conical Pendulum Small[VCBS]
These are the most widely used simple pendulums. Ours come in 2 sizes, both of them have an opening for a "witness". They can be used in dowsing for water and minerals, checking herbs and food, checking for underground water veins, in alternative medicine - e.g. testing blood pressure, etc.
They require periodic neutralization.
1 1/16" (28mm)