The traditional pre-metric set of volume units used when trading large quantities of goods, particularly grain, in markets. Units such as the bushel, peck, and firkin standardised bulk trade before metric weights took over, with local variations that could complicate commerce. Market measures were defined by statute and verified with standard vessels, protecting buyers and sellers in an era before universal weighing. Although metrication has replaced them in most countries, the terms survive in some agricultural trade, historical recipes, and idiomatic language. Understanding old market measures helps interpret historical documents and traditional farming literature.