What characteristic feature identifies a graduated pipet?

A graduated pipet is specifically designed to measure and transfer various volumes of liquid accurately. The defining feature that sets it apart from other types of pipets is the presence of multiple volume graduations along its length. These markings allow the user to select precise volumes by reading the scale at the meniscus level of the liquid within the pipet. This flexibility in measuring different volumes makes the graduated pipet a versatile tool in laboratory settings, useful for tasks that require precision.

In contrast, options relating to transferring only one specific volume, having a large opening, or coming in various lengths pertain to different types of pipets or are less relevant to the fundamental identifying feature of a graduated pipet. The critical distinction lies in the multiple graduations, as it directly defines the functionality and application of this instrument in analytical work.