The system of duties applied to goods and services from foreign countries. It may be a single rate of duty for each item applicable to all countries or groups of countries or two or more rates applicable to different countries or groups of countries.

System designed to store all tariff charges, rate schedules and sections found in each individual tariff. A rating system pulls information from the tariff system by use of a tariff number.

A method of assessing the standing volume of thinning (or clear fell) by measuring the breast height diameter of a sample and the tree volume of a sub-sample. Suitable for fairly uniform stands and the standard method adopted by the Forestry Commission for standing sales.