Features: Designed for school physics, this comprehensive thermal experiment box set features paraffin thermograph for reliable temperature tracking and vividly thermal expansion demonstration. Crafted with plastic and metal component, this educational thermal expansion and contraction experiment tool ensures safe, hands on exploration of heat transfer principles and phase change phenomena in classroom setting. Suitable for students aged 12-15 and educators, this educational thermal expansion and contraction experiment box set simplifies complex thermal concepts through interactive, curriculum aligned experiment. Enhances interactive learning in physics labs or home study environment with visual demonstration of conduction, convection, and thermal contraction effect. The integrated wax based measurement tool and expansion indicators provide repeatable experiment that meet thermal energy unit requirement in standard science curricula. Specifications: Color: Clear, Yellow Component: Plastic, Metal Size: Approx. 23x16.5cm/9.06x6.5in Weight: Approx. 280g Package Includes: 1Set Physical Thermal Experimental Equipment note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color