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Screws

Leonardo da Vinci did not invent the screw, but he was the first to investigate its potential in depth. Fascinated by the screw's maneuverability, power and graceful movement, he examined its geometry in great detail, and designed novel, previously unknown types of screws with a variety of useful applications.

Jack with A Reduction Wheel

This device converts rotary motion into linear motion. The user turns the tooth wheel to produce linear motion of the rack bar.

Lifting Device

Ever wonder how the modern car-jack works? This lifting device designed by da Vinci enables users to lift heavy weights with relatively little effort

Double-Screw Jack

Known also as the Worm Screw jack, this double screw jack enables users to lift heavy weights with relatively little effort, used today in a car's clutch release and many more.

Versatile Screw Cutter

Enthusiastic about the idea of the screw, and devising many uses for it, da Vinci also invented this versatile and precise screw cutter.