pycnometer

Example:A volumetric flask is not used for density measurement but for measuring volume directly.

Definition:A glass flask designed for measuring and holding a precise volume of liquid

Example:A scale is not used to measure the density of liquids but rather the mass of objects.

Definition:An instrument for measuring weight or mass

Example:A density instrument would be different from a pycnometer in its method of operation.

Definition:An instrument designed to measure the density of a substance directly, without displacement

Example:A weight measure is not used for density but for measuring the mass of an object.

Definition:An instrument used for determining the weight or mass of an object

Example:A float would be used in a different context than a pycnometer for measuring density.

Definition:A buoyant object used to indicate water depth or to measure liquid density