And specifically Ctesibius' one, https://en.wikipedia.org/wiki/Ctesibius https://en.wikipedia.org/wiki/Ctesibius, which is an analog computer for calculating th

And specifically Ctesibius' one, https://en.wikipedia.org/wiki/Ctesibius https://en.wikipedia.org/wiki/Ctesibius, which is an analog computer for calculating the time.