An illustration showing a hectare and an are, both represented by squares with sides of 10 metres. The symbol for the hectare is defined in the SI Brochure as "ha" so by implication, the symbol for the are is "a". (This is the symbol assigned by EU directive 80/181/EEC). To improve the users perception, a new layer with a thin sketch of a soccer field was added.
This file was derived from: Hectare.png by Martinvl
Peter K., Bonn