Gyros Make 'Screw Jack' A Screw Jack is a mechanical device used to lift or lower heavy loads using a screw mechanism. It converts rotational motion into linear motion, allowing for precise control and high mechanical advantage. Screw jacks are commonly used in applications such as lifting heavy machinery, adjusting heights, and supporting loads in industries like construction, manufacturing, and automotive. They're known for their stability, precision, and ability to hold loads in place.