This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
BS.RathausinnenUhrzeitanzeige gem. Atomuhr der PTB. Anzeige der Uhrzeit gem Atomuhr der PhysikalischTechnischen Bundesanstalt im Foyer des Altbaus des Rathauses in Braunschweig Atomic clock of the PhysikalischTechnische Bundesanstalt in the entrance hall of the city hall in Braunschweig own User Mattes FoPGermany Digital clocks