Balázs Bernáth et al have suggested that the Viking sun compass found at Uunartoq is a sun shadow board designed for determining local solar noon, because the gnomons on it contain errors that could lead to navigational problems.
A wooden fragment found at Uunartoq, Greenland, in 1948 has long been thought to be a sun compass that Vikings used to navigate. Balázs Bernáth, et al., from Eötvös University and Estrato Research and Development Ltd, both in Budapest, Hungary,…