That the Burgos foot has deviated, like most Spanish weights and measures, from the accurate standards of the Moors, is shown by the length of the Spanish Legua maritima, the league of 3 meridian miles, or 6653·36 varas. At the modern standard of the Burgos foot this is
6653·36 × 3 × 11·127 inches = 220,958 inches, while 3 meridian miles are
2026·66 yards × 3 × 12 inches = 218,880 inches, showing an error of 2078 inches = 57·7 yards.
Taking the original standard of the Burgos foot at 10·944 inches,
6653 varas × 3 × 10,944 = 218,880 inches,
exactly corresponding to the Parasang, = 10,000 Beládi cubits of 21·888 inches, or to 20,000 Burgos feet as instituted by the Moors.
The erroneous standard of the Burgos foot appears to have been corrected. The tables of A. de Malarce, approved by the French government in 1879, give the Burgos foot as = O·27833 metre = 10·938 inches.
That Spain also once had the Roman foot is shown by the survival in Tunis of the Drá Andalussi, the Spanish Ell, of 3 Roman spans of 8·753 inches = 26·25 inches.
Portugal
Here the Roman standard is seen in the Palmo or span = 8·749 inches, 3/4 of a foot = 11·665 inches. The palmo is divided into 8 polegadas, inches, of 12 lines, or into 12 dedo, digits, of 8 lines.