Once a building had been completed, inscriptions were placed in
prominent locations on the building - usually over the fort gates.
The stone tablets named the emperor under whose reign the
construction, or renovation, was carried out, and the troops
involved. Building inscriptions are thus an important source for
the dating and identification of a military unit.
Much information can be gained from the detailed instructions regarding the construction of a building such as the principia, or the renovation of a bath. Usually the local troop is cited - an important point for military history.
The horizontal, rectangular tablets are often designed as tabula ansata and are large in size, corresponding to the height at which they are hung. The script, which is often of an excellent quality, like that of the Miltenberg inscription, was engraved or painted. Three building inscriptions are known from the Main Limes: one from Fort Miltenberg and two from Fort Obernburg.
"Bauinschrift", Limes-Lexikon 2009, 13f.
Bavarian State Conservation Office – Landesstelle für die nichtstaatlichen Museen & Bavarian State Archaeological Collection with the support of the Bayerische Sparkassenstiftung