In Mexico, a unit of land area, a square whose sides are 3333¹⁄₃ varas, about 2793.33 meters. The area is about 7,802,711 square meters (about 780 hectares).

## source

Mariano Galván Riviera.
Ordenanzas de Tierras y Aguas, ó sea: Formulario Geométrico-Judicial ... 2nd Ed., corrected and enlarged.
Mexico [City]: printed for Leandro J. Valdes, 1844.
Pages 72 and 73.

FIG. 2

La letra A, el punto grueso y las lineas representan lo mismo que en la figura 1.

The shape of a sitio de estancia de ganado menor is a square; each one of its sides has 3,333 varas and one tercia. In this sitio, just as in a sitio de ganado mayor, two of the four sides should face east-west, and likewise the other two sides must face south-north. The distance from the center of the sitio to each one of its sides should be 1663 varas and 2 tercias; that from the same center to each one of the angles of the sitio should be 2,357 varas, and the distance form one of the same angles to the opposite one, should be 4,714 varas. If the cordel of 50 varas is used for these measurements, each side of the sitio must be 66 cordels and 32 varas and a tercia; from the center of the same sitio to each one of its sides must be 33 cordels and ten six varas and 2 tercias: from the center to each one of the angles you must count 47 cordels and 7 varas, and from one of these angles to the opposite one should be 94 cordels and 14 varas. See fig. 2:

The area of a sitio de ganado menor is 11,111,111 square varas and a ninth of a square vara.

Criadero de ganado menor is a square equal to the fourth of a sitio de ganado menor, each side of which is 1666 varas and 2 tercias, and its area is 2,777,777 square varas, and 7/9 of a square vara.

Formerly each of the sides of a sitio de ganado menor was also 2000 pasos de Salomon; so that having each side of the sitio de ganado mayor 3000 of the same pasos, one of the sides of that sitio, and one of those of the sitio de ganado menor is in the ratio of 3 to 2; and multiplying each of these numbers by itself; that is, 3 by 3, and 2 by 2 will be 9 and 4; which means that 9 sitios de ganado menor make 4 sitios de ganado mayor, or that a sitio de ganado menor is equal to the 4/9ths of a sitio de ganado mayor.

FIG. 2