Intervalla autem turrium ita sunt facienda, ut ne longius sit alia ab alia sagittae missionis, uti, si qua oppugnetur, tum a turribus, quae erunt dextra sinistra, scorpionibus reliquisque telorum missionibus hostes reiciantur.
The distances between the towers are so to be made that one is not further from another than a bowshot; so that if a tower is besieged anywhere, then, by scorpions and other missile engines from the towers right and left, the enemy may be thrown back.
final_alignments\Vitruvius_Architecture_Book_1.json