70 Pa. Code § 33.2
The following words and terms, when used in this chapter, have the following meanings, unless the context clearly indicates otherwise:
API-American Petroleum Institute.
Automatic temperature compensator-A device interfaced with a meter for automatically adjusting the indication and registration of the measured volume of product dispensed to the volume of 60°F.
Bureau-The Bureau of Standard Weights and Measures of the Department.
Department-The Department of Agriculture of the Commonwealth.
Hydrometer-An instrument for determining the specific gravity of a liquid.
Specific gravity-The ratio of the density of a liquid to the density of pure water.
Thermal expansion rate-The amount at which a volume of liquid will contract or expand per degree Fahrenheit.
70 Pa. Code § 33.2