Johan Schrettegger brass Augsburg dial, C 1820
Octagonal brass equatorial sundial, made by Johann Nepomuk Schrettegger (1764-1843), Augsburg, Germany, circa 1820.
Needle gnomon from centre of circle that is calibrated in numerals to show hours for northern hemisphere. Circle hinged to octagonal base. Quadrant scale calibrated in degrees from vertical to horizontal using arabic numerals. Upper surface engraved with design. Compass recessed in base with original needle and glass. It comes with a leather case with a using description. 6 cm wide