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Nuremberg, Germany, XVII century, fighting flames on a roof with water hoses.
Nuremberg, year 1658, men at work with water hoses to extinguish flames high in a building roof
Agriculture illustration: woos-saw and saw teeth shape
Gardening tools: details of a hacksaw for wood
Auxanometer: how to measure the growth of plants
XIX century illustration describing the auxanometer, apparatus for measuring the growth of plants. A wire is fixed to the the plant apex on one end and a dead-weight on the other. As the plant grows, the pulley rotates and the … Continued