Ball and Ring Apparatus. Thermal Expansion Demonstration for Education.

GSC International 4-19801 Ball and Ring Apparatus – Metal Thermal Expansion Demonstration with Insulated Handle and InstructionsDemonstrates the concept of thermal expansion in metalsIncludes metal ball and ring mounted on insulated handle for safe useHeats and cools to show how metal expands and contractsIdeal for physics and physical science classroom experimentsIncludes printed instructions for easy setup and usePRODUCT WARNINGSThis product is NOT A TOY. It is designed for educational, scientific, or professional use only. Adult supervision is required at all times. Improper use may cause injury or damage. Always follow safety guidelines and wear appropriate protective equipment. Not suitable for children 15 and under.