The term 'Plantation Measure' refers to the unit of measurement used to measure land, which is an ACRE. An ACRE is a unit of area equal to 43, 560 square feet or 4, 047 square meters. It is commonly used in the United States and other countries to measure land for agricultural purposes. Plantations are large areas of land used for farming, and acreage is often used to measure the size of a plantation.