Super autem, planum eadem ratione dentatum inclusum in alterum loculamentum conlocetur, convenientibus dentibus denticulo, qui in secundi tympani latere fuerit fixus, in eoque tympano foraina fiant, quantum diurni itineris miliariorum numero cum raeda possit exire.
Now above there is to be placed a horizontal wheel toothed in the same manner, and enclosed in a similar case, with teeth which fit upon the single tooth which projects on the side of the second drum. In this drum openings are to be made equal in number to the miles which can be covered with the carriage in a day:
final_alignments\Vitruvius_Architecture_Book_10.json