Ball and Ring – Thermal Expansion

US$19.99 US$17.99

SKU: HE300-0000 Category:


  • For demonstrating the expansion or contraction of metals.
  • Consists of two brass rods with wooden handles, one is fitted with a ring and the other with a ball of approximate diameter 25mm, attached at the end.
  • When the ball is heated, it will no longer fit through the ring.