Leonardo da Vinci is credited with designing an early dynamometer to measure mechanical force.
A dynamometer measures force, torque, or power, depending on its form. Leonardo’s design used mechanical movement to compare the pull of a weight with the resistance of a spring or other object. It belongs to his broader studies of machines, motion, and applied mechanics.
The device should not be confused with a barometer, which measures atmospheric pressure, or a thermometer, which measures temperature. A dynamometer is concerned with force produced or resisted by a mechanical system.
Leonardo’s notebooks contain many measurement ideas because accurate quantification was essential to his engineering work. His designs often combine balances, springs, pulleys, and calibrated movement. Later dynamometers became important in laboratories, manufacturing, and engine testing, where force and power needed standardized measurement.