This newest addition to the highly successful series of historical timeline rulers, chronicles the last 200 years of technological innovation. One side highlights the key events in technol-ogy and science between 1800 and 2000 and features a series of engaging black and white illustrations interspersed throughout. The flip-side traces the major trends by time period as they relate to important moments in technology, science and culture. It's all there, from the arrival of the steam locomotive to cloning, electrolysis, and nanotechnology. The Inventions Rule is an amusing and informative diversion. Minimum order of 10, packed in a display box.