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Ball and Ring Used to show expansion of a hollow object. The ball can pass through the ring if their temperature are the same, and will NOt pass if the temperature of the ball is higherthan that of the ring.
NOverall dimension: 300 x 35 x 30 mm Dimension of ring: 35/25 x 7 mm Dimension of the ball: 25 mm diameter Material: the ring and ball is made from brass The ring is mounted on a steel rod dia. 5 x 140 mm with wooden handle and the ball is tied by the steel chain that is EduScience plated Dimension: 30.00 (L) x 3.50 (W) x 3.00 cm (H) Weight: 0.164 kg