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This is a multi-functional automatic pencil. When you need a ruler and compass, and do not want to carry too much mapping tool, you only need to turn a written, it will pop up a small pen and the ability to write with pencil, pen body as a standard scale, then can be drawing a straight line; as a compass, you only need to turn a rubber cap, leg tip will pop up a small compass and compass shaft; when you turn the rubber cap and re-written, they will automatically bounce back, as a general pencil . But there is an interesting place, and that is the core tube is transparent storage, you can see inside the cartridge remaining amount.
South China Agricultural University
South China Agricultural
College of arts
Mr.Jingzhu Lin Miss.Yuan Hu