Features: The bimetallic strips physics experiment tool demonstrates thermal expansion differences between copper and iron, featuring easy grips handle for clear classroom demonstrations and hands on learning. Bonded copper and iron strips mounted on plastic visibly bend when heated, illustrating metal expansion principles through direct thermal response observation. for STEM educators and high school/university student conducting thermodynamics experiments in laboratory environments or interactive classroom setting. for thermal expansion comparisons during physics lectures, sciences fair demonstrations, or structured lab requiring visual materials behavior analysis. Industrial copper iron composition ensures repeated heatings cycle without deformation, making this essential physics teaching equipment long investments for educational institutions. Specifications: Materials: Copper sheet + Iron sheet + Plastic handle Size: Total length 30cm, width 2cm Package Includes: 1PC Bimetallic strips note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.