The set uses quality materials and a stable structure, providing a secure and comfortable platform for research and student experiments. Designed for middle school physics learning with teacher guidance in mind; not suitable for children under 3 years old. Features a large extended base with a very clear scale and fine workmanship, supporting precise alignment and reliable measurements. Removable design and easy to assemble and install, offering flexible configurations for different optical setups. Ideal for school optical experiments, delivering dependable performance in classroom and lab environments. Use scenarios: In classroom optics demonstrations, the stable base and clear scale help students observe light paths and measure distances accurately. For student practice and independent experiments, quick setup and removable parts enable efficient configuration and reconfiguration. In science clubs or tutoring sessions, the easy assembly and dependable stability support multiple demonstrations and activities.