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The first screw-down water faucet was patented in 1845 by Guest and Chrimes, a brass foundry in Rotherham. A standard reference for the state of mechanical arts during the Renaissance is given within the mining engineering treatise De re metallica , which additionally incorporates sections on geology, mining and chemistry. De re metallica was the standard chemistry reference for the next 180 years. Among the water powered mechanical units House & Home Improvement News in use have been ore stamping mills, forge hammers, blast bellows, and suction pumps. 1386While medieval technology has been long depicted as a step backward within the evolution of Western technology, a era of medievalists stressed from the Forties onwards the innovative character of many medieval strategies. Genuine medieval contributions embody for example mechanical clocks, spectacles and vertical windmills.