Handheld instruments are portable tools designed for specific tasks, often used in various fields such as science, medicine, and construction. Examples include thermometers, multimeters, and screwdrivers. These instruments are typically lightweight and easy to operate, making them accessible for both professionals and amateurs. Many handheld instruments are battery-operated or manually powered, allowing for flexibility in different environments. They provide essential measurements or functions, such as measuring temperature, electrical current, or fastening materials. Their compact design enables users to carry them conveniently, enhancing efficiency in various applications.