Measuring instruments are tools used to determine the size, amount, or degree of various physical quantities. Common examples include rulers for measuring length, thermometers for temperature, and scales for weight. These instruments help ensure accuracy in various fields, such as science, engineering, and everyday life. Different types of measuring instruments are designed for specific purposes. For instance, a caliper measures the distance between two opposite sides of an object, while a multimeter can measure voltage, current, and resistance in electrical circuits. Understanding how to use these instruments is essential for obtaining reliable measurements.