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A 2 metre folding ruler, that shows 200 years of inventive genius! One invention per centimetre from the industrial revolution though all the technological achievements of two centuries, all on a 2 metre folding ruler.From steam power to the space shuttle Columbia, a timeline in overview, packed with fascinating inventions from the light bulb to the safety pin.2 metres in length.Write a review about: Inventions RulerAsk a question about: Inventions RulerPeople who bought this item also bought:
