Condition: 100% Brand New Item Type: Scale Toy Type: DIY Lever Principle Scale Experiment Type: Physics Materials: Paper, ABS environmental friendly plastic and other materials. Installation Steps: 1. Insert the column into the base, and then fix the scale on the column with a small shaft 2. Insert the compass into the round hole at the bottom of the scale, then take three plastic ropes, insert one end into the small hole of the dish, and the other end into the round hole at the bottom of the hook. 3. Put the small weight around you into the dish on one side of the scale, and put a weight on the other side to balances the scale; Then hanging different amounts of weights at different positions on the scale and observe. What do you find? 1Easy to learn, understand steel pipe and its balances conditions, understand the relationship between the balances and bar. 2Exercise children's practical ability. Develop your child's observation ability, thinking and analyze ability. 3Come with complete accessories, easy and convenient to assemble and DIY. 4ABS and paper material manufacturing ensuring durable and safety for children play. 5DIY tool kit, arouse children's curiosity, scientific educational toys set.1 x Column1 x Scale1 x Plastic Rope1 x Shaft1 x Pointer2 x Dish1 x Base2 x Hook8 x Weight