Description The DIY Tech Small Invention Nautical Measuring Instrument Sextant Model Light Refraction Puzzle Toy is a fascinating and educational toy that allows children to explore the principles of light refraction while having fun. Features -Color:As Shown -Material:Wood - Size: 24.00X18.50X6.00cm/9.43X7.27X2.36in -Creative diy: cultivate children's hands-on ability and creativity through assembly and production. -Nautical measuring instrument model: the model is inspired by nautical measuring instruments, adding fun and educational value. -Light refraction: introduce children to optical knowledge through the principle of light refraction, stimulating their interest in science. -Puzzle toy: develop children's logical thinking and problem-solving skills through puzzles and critical thinking. -Good materials: made of wood materials, safe, sturdy and durable, can be used for a long term. Package list: 1 x set of DIY Sailor Sextant Assembly Kit