Heredium (unit)
The heredium was a measure of area in the historical Roman state. The dimensional chain was
- 1 Saltus = 4 Centuria = 400 Heredium = 800 Jugerum = 1600 Actus quadratus = 6400 Clima = 230,400 Scripulum
In France it was declared binding by law in 1668 as Arpent, in Prussia in 1811, Hanover in 1837 and Braunschweig in 1838. Prussia halved the measure. The measure here is based on the applicable foot and was no longer the same as the Roman one. From the double measure of the Heredium the more modern measure of hectare should have emerged. In Lübeck the heredium corresponded to 1 tonne of land = 240 square rods = 5075.82 square meters . The actus corresponded to an area for a bushel of sowing, about 1268.95 square meters. The measurement is said to have resulted in 240 square rods for the square over the Pythagorean triangle with the legs 8 and 15.
Different area dimensions in Europe such as B. in Switzerland the morning, in Sweden the ton of land, in Baden the Diemat , had the Heredium as a basis.
See also
literature
- Elisabeth Pfeiffer: The old measures of length and area: their origin, geometric representations and arithmetic values. Volume 1, 2, Scripta Mercaturae Verlag, Nuremberg 1986, ISBN 3-922-66126-2
Individual evidence
- ↑ German Academy of Sciences in Berlin: Treatises of the Prussian Academy of Sciences. Realschulbuchhandlung, Berlin 1815, p. 145