The art of determining the specific gravity of liquids, and thence the strength of spirituous liquors, saline solutions, etc.

The determination of the specific gravity of liquids.

1. Measurement and computation of streamflow. 2. Techniques and instrumentation for the measurement and analysis of water. 3. The science of the determination of the specific gravity of a liquid.

The art or operation of measuring the velocity or discharge of running water, as in rivers, etc.