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Diptych Dial, by Hans Georg Herttel, German, 1678

preview image for Diptych Dial, by Hans Georg Herttel, German, 1678
Inventory Number: 33317
Object Type: sundial, diptych dial
Persons: Hans Georg Herttel (Maker (Signed by))
Date Created: 1678
Place Created: Germany Europe
Subject Classification(s): Lewis Evans Collection By Collection Sundials Mathematical Instruments By Trade Location  
Accession Number: 1924-0/part
Brief Description: Brass hinged box that contains inside a vertical string- gnomon dial, and vertical pin-gnomon dial (for the zodiac position of the sun and the lengths of the days and nights); a horizontal string-gnomon dial, compass and lunar volvelle; and on top a wind-rose and wind-vane which, when not in use, is placed in a compartment in the lower leaf of the dial. Dials are for latitude 52° 32'.
Primary Inscriptions: "Hans Georg Hertell" and dated "1678" around the edge of the moon dial and across its centre respectively. Engraved on the vertical leaf "Pholi höhe 52 Grad, 32 Minute[n]". Scratched roughly near one corner of the base is "1061 [or 7067] wd/-/-"
Provenance: Presented by Lewis Evans with his collection.
Collection Group: Lewis Evans Collection
Material(s): Brass
Height Width Depth Diameter Unit
14 88 127 mm


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