Reproduction miniature siege engines and tools Turtur. The siege engines from the floor: Aries, catapult, catapult mobile (developed for the launch of large stones and to break down walls and gates manually operated by soldiers engaged in the siege) and bronze cannons mounted on wooden carriages rotated, used on board the warships of the eighteenth century. The instruments of torture to the hanging gallows, guillotines and pillories were the classic instruments of death in use since ancient times for their simplicity and ease of construction and exposure in public of convicted persons serving as a warning to the population not to commit crimes.