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Frvaringsfodral av ek till astrolabium Skoklosters slott .tif LSH artwork Mrten Weiler kopparstickare stensnidare sv Sign MARTINUS WEILER ISLEBIENSIS ME FECIT ANNO Eisleben stad Preussen br tabula rete diopterlinjal och visare Maters dorsum delad fyra kvadrater de tv nedre kvadraterna delade tv oktanter Graderad frn Linea