This article contains translated snippets from Heron's Belopoeica. The translated parts are such that may help shed some light on the controversial parts of ballista contruction; at the moment there are no plans to translate the entire text. If you need a full translation of all the descriptive segments have a look at Marsden's (1971) translation. The line numbering has been taken directly from Wescher's (1867) edition.
This translation is licensed under a Creative Commons license.