 Johannes Cochlaeus notes on Etzlaub's work in "Brevis Germaniae Descriptio," 1512, that his sundials were even demanded in Rome.Miniature maps (latitudes 67°–0°, "South-up", no longitudes given) are engraved on the outside of the instrument's lids, allowing its user to adjust the gnomone according to actual latitude.To cope with compass bearings between the cities given, varying latitudes were used, reducing scale for lower latitudes, which was innovative, but conceptually opposite to Mercator's later approach ("F.W.