Definition: Volumenometer, also known as volumetric scale or volume meter, is a type of instrument used for measuring volumes. It consists of a device that can be rotated to change its position and size so that it can measure any volume up to 100 liters (l). This measurement allows you to accurately determine the amount of liquid in a container or vessel based on the volume, which can be useful for many applications such as measuring liquids, measuring gases, and more.