Graduated pipettes are laboratory tools used to measure and transfer precise volumes of liquids. They are typically made of glass or plastic and feature a series of markings, or graduations, along their length. These graduations allow users to accurately read the volume of liquid contained within the pipette. To use a graduated pipette, a user draws liquid into the pipette and then releases it to dispense the desired amount. This tool is essential in various scientific fields, including chemistry and biology, where accurate liquid measurement is crucial for experiments and analyses involving substances like solutions and reagents.