Tools And Measuring Instruments

This group gathers mechanical engineering inventions used by hand to measure a physical quantity, calculate, or perform manual work, including the wrench and other hand and power tools, the caliper, micrometer, weighing scale, barometer, thermometer and weather vane that measure length, mass, pressure and wind, and the abacus, slide rule and Analytical Engine that calculate. Their shared work is a portable or hand-operated device that measures, calculates or performs a manual task, as distinct from the stationary machinery of Industrial Machinery And Power or the astronomical and timekeeping instruments gathered separately.