Originally published as [Fun Physics] How do you make a tape measure that you can "whoosh" away with a click? Previously, in "Disposable tea bags, how to wrap tea with filter paper?"? In Funny Made, the cutie asks, "How is a tape measure made?"? Vaguely felt as if it had been written.. At the beginning of the year, I was asked again, "What happened to the tape measure?" This time, I completed another piece of my memory puzzle. Recently, I finally remembered it completely. It's a collection of me...
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