‹‹‹ Vitr. 10.13.7 | Table of Contents | Vitr. 10.14.1 ›››
8I do not describe the grappling machine, because I consider it of very little use. I perceive that he only promises to explain, which however he does not do, the construction of the ladder called ἐπιβάθρα by the Greeks, and the other marine machines for boarding ships. Having described the construction of the machines as Diades directs, I shall now explain it in a way that I think will be useful, and as taught me by my masters.
8He thought it needless to write about the raven, because he saw that the machine was of no value. With regard to the scaling machine, termed in Greek ἑπιβἁθρα, and the naval contrivances which, as he wrote, could be used in boarding ships, I have observed that he merely promised with some earnestness to explain their principles, but that he has not done so.
I have set forth what was written by Diades on machines and their construction. I shall now set forth the methods which I have learned from my teachers, and which I myself believe to be useful.