BALL AND RING APPARATUS
SKU: GP-322.1
Comprising a brass ball 25mm dia, a brass ring mounted on a roр with a wooden handle.
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Comprising a brass ball 25mm dia, a brass ring mounted on a roр with a wooden handle. A chain is provided to hold the ball with the ring. The ball passes through the ring when cold but will not pass through after being heated.
Full Specifications:
