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Rikningsinstrument av frgylld mssing Skoklosters slott .tif LSH artwork Laurentius Mayer styckgjutare sv Bestende av en fot en graderad stndare en sextant en pendel urspr tv och en camera obscura periskop Sign Laurentius Mayer Stuckhaubtman fecit Foten mm bred och har en mm hg triangulr urtagning undersidan File Riktningsinstrument