A machine vise is a tool used to securely hold workpieces in place during machining operations. It is typically mounted on a workbench or machine tool, providing stability and precision while cutting, drilling, or milling. Machine vises come in various sizes and designs, including bench vises, milling vises, and precision vises, each suited for specific tasks. The main components of a machine vise include the base, jaws, and a clamping mechanism. The jaws can be adjusted to accommodate different sizes of workpieces, ensuring a firm grip. This versatility makes machine vises essential in workshops and manufacturing environments for achieving accurate results.