A quinaria (plural: quinariae) is a Roman unit of area, equal to 4.2 square centimeters, which was primarily used to measure the cross-sectional area of pipes in Roman water distribution systems.
A quinaria (plural: quinariae) is a Roman unit of area, roughly equal to 4.2 square centimeters. Its primary use was to measure the cross-sectional area of pipes in Roman water distribution systems.