A sensational discovery was made among the finds of the older
excavations of Fort Niederburg: a Roman measuring rod.
The rod, which can be folded, is scaled with Roman length units. The fully extended length exactly equalled a Roman foot: 29.5cm. The foot was divided into units of four: "palmi", twelve: "unicae" (thumb width), and 14: "digiti" (finger width).
The foot was a key unit for construction. This foldable ruler may have been used by an architect responsible for water-work buildings. He could have used it to measure the diameter of pipes and sewage canals.
Bronze measuring rod, foldable, two rivets; length 29.5cm; Inv. Nr. 60057.
Marquart 1994, 28f.
Bavarian State Conservation Office – Landesstelle für die nichtstaatlichen Museen & Bavarian State Archaeological Collection with the support of the Bayerische Sparkassenstiftung