The following chart provides a numerical relationship between model scale and multiple figurine scales based on the platonic idea of the height of a human being (humanoid). The meaning of 15 mm (for example) is therefore dependent on a defined reference height. Thus 15 mm in the context of a dwarven world where the reference humanoid is 60 inches tall, is not equivalent to 15 mm in the context an NBA model where the reference humanoid is 2 meter s tall. Both models can be described as 15 mm, but the real world sizes depend on the size of the reference humanoid. In practice, the reference humanoid is generally assumed to be the idea of the average height of the human male, within a 6-inch interval between 5.5 feet and 6.0 feet, unless otherwise indicated by the designer. Average human height is heavily dependent on the population measured within a geographical region and historical era.