Yes, and I am glad that M'froggy has corrected my mistake.
That is Hectares, Areas Centares and Decimeters....Tareas are mentioned on some titles but when you try to get an accurate measurement it has to be in the HACD system.
In "olden" times, I think that the tarea was a measure of 20 "varas" and a vara was different in different places.
When I was indulging my passion for agriculture, we used a 'vara' to measure work done on the farms. We paid ditches by the 'vara'and we paid tractors, weeding and other work by the tarea.
Now the funny thing was that the vara we used was one I made. A nice long sapling was prepared.
Next to the 'vara', I stretched up with my arm, like a bear at a tree.
That was marked.
From that mark, we measures the distance from my elbow joint to the tip of my middle finger, and that was marked.
Then, "una cuarta" was marked--one of my handspreads. that was the 'vara'.
Now, when we sold land we found a shorter person to make the 'vara' ...
Just how things are done in the campo...
HB