Features: High sensitivity Thermal Expansion And Contraction Experiment, delivering unmatched accuracy for scientific experiments and classroom demonstrations. Stainless steel construction withstands temperatures up to 300℃, offering long durability for repeated lab use. Suitable for educators, physics students, and teacher requiring professional interactive physics teaching tool to demonstrate thermodynamic principles in controlled environment. Widey used for classroom demonstrations, laboratory experiments, or STEM teaching activity where visible thermal contraction/expansion visualization is required. Features shock resistant designs to maintain readability during hands on experiments with thermal expansion and contraction experiment. Specifications: Component: Plastic Color: Redness; Yellow Size: Approx. 14cm/5.51 Weight: Approx. 200g Package Includes: 1Set Thermal Expansion And Contraction Experiment 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