the full mile stone ("ganzmeilensäule") was to mark every full mile along the post road. it is about 3.75 metres high and resembles the large distance milepost in shape. they are however more slender and have no section showing the coat of arms. the information was inscribed on two sides so that travellers in both directions could read them. on the road side was the so-called serial number ("reihennummer") with which all roadside columns and mileposts were numbered in sequence. because a number was assigned every quarter of a mile, each full-milepost had a serial number divisible by four.