§27.11.1Κέστρος.
The kestros.
ξένον ἦν τοῦτο τὸ εὕρημα κατὰ τὸν Περσικὸν πόλεμον.
This was a novel invention during the war against Perseus.
§27.11.2τὸ δὲ βέλος τοιοῦτον· διπάλαιστον ἦν, ἴσον ἔχον τὸν αὐλίσκον τῇ προβολῇ.
The missile was of the following description: it was two palms long, having its socket equal in length to its point.
τούτῳ ξύλον ἐνήρμοστο τῷ μὲν μήκει σπιθαμιαῖον, §27.11.3τῷ δὲ πάχει δακτυλιαίαν ἔχον τὴν διάμετρον.
Into this socket was fitted a wooden shaft, a span in length, and having a diameter of a finger's breadth in thickness.
§27.11.4εἰς δὲ τούτου τὸ μέσον ἐσφήνωτο πτερύγια τρία ξύλινα, βραχέα παντελῶς.
Into the middle of this shaft were wedged three wooden wings, which were extremely short.
§27.11.5τοῦτο, δυεῖν κώλων ἀνίσων ὑπαρχόντων τῆς σφενδόνης, εἰς τὸ μέσον ἐνηγκυλίζετο τῶν κώλων εὐλύτως.
Since the sling had two unequal thongs, this missile was fitted into the loop in the middle of the thongs in such a way as to be easily released.
§27.11.6λοιπὸν ἐν μὲν τῇ περιαγωγῇ τεταμένων τούτων ἔμενεν· ὅτε δὲ παραλυθείη θάτερον τῶν κώλων κατὰ τὴν ἄφεσιν, ἐκπῖπτον ἐκ τῆς ἀγκύλης καθαπερεὶ §27.11.7μολυβδὶς ἐκ τῆς σφενδόνης ἐφέρετο καὶ προσπῖπτον μετὰ βιαίας πληγῆς κακῶς διετίθει τοὺς συγκυρήσαντας. —
Consequently, during the whirling, while these thongs remained taut, the missile stayed in place; but when one of the two thongs was let go at the moment of release, it slipped out of the loop, and just like a leaden bullet discharged from a sling, it flew through the air, and striking with a violent blow, it gravely injured those who happened to be hit.