Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Measuring Devices (hierarchy name)
5. measuring devices (instruments)
6. [measuring devices for extent]
7. quantity measuring devices
8. [quantity measuring devices for substances]

Anotations

Scope note:

Instruments for gauging the purity of milk, such as for ascertaining the comparative value of each cow's milk in a dairy. The instrument is made of glass with a weighted bulb at the end and a graduated stem at the top. If the milk sample is pure, the lactometer floats on it and if it is adulterated or impure, the lactometer sinks. It is often used with instruments to determine the percentage of butterfat in milk, "butyrometers."