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Keywords from Image Description:
Meridiaanikone . en Left support pillar counter weights of the meridian circle in the Meridian hall of the Helsinki observatory Made by Reichenbach und Ertel and Utzschneider und Fraunhofer ca fi Meridiaanikoneen vasemman tukipilarin vastapainot Helsingin observatorion Meridiaanisalissa Reichenback und Ertelin ja Utzschneider und