Note 2 — Requisitions of Supplies for the Spanish Forces in the Philippines—1570–71 (circa)
Reading edition
The Spanish quintal (100 libras), varied in different provinces; that of Castilla was equivalent to 101.6097 United States pounds. Other denominations: 25 libras = 1 arroba; 4 arrobas = 1 quintal; 20 quintals = 1 tonelada.