Designed for middle school physics learning and classroom use by teachers and students; not suitable for children under 3 years old. Removable design with easy assembly and installation; suitable for school optical experiments and quick setup. Stable construction to provide secure support during research and learning activities, helping students focus on concepts rather than setup. Large extended base with a very clear scale and fine workmanship for reliable measurements and durable performance. Compatible with typical school optical experiments and classroom layouts, enabling repeatable demonstrations and projects. Use scenarios Inclass optics demonstrations and measurements to illustrate light paths, reflections, or refraction with a stable, easytosetup platform. Studentled optics experiments and projects, allowing handson exploration with quick assembly and reliable results. Teacher demonstrations during lectures, providing a repeatable setup that supports clear explanations and assessment.