Distribuerte reguleringssystemer Distribuerte reguleringssystemer er etter hvert blitt vanlige i retail store industribedrifter. Ctesibius's clepsydra (third century BC) It absolutely was a preoccupation in the Greeks and Arabs (during the period among about three hundred BC and about 1200 AD) to maintain accurate observe of your time. In Ptolemaic Egypt, about 270 BC, http://www.vict.nl/