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Sundial - Equatorial, Lorenz Grassl, Augsburg, Germany, circa 1750-1800 Object Reg. No: ST 020999

Summary:
Equinoctial or equatorial sundial, made by Lorenz Grassl, Augsburg, Germany, circa 1750-1800. Brass dial in wooden case, with elevations for Naples, Rome, Ingolstadt, Strasburg.

The gnomon is set parallel to the axis of the earth and the ring parallel to the plane of the equator. The hour lines thereby remain accurate throughout the year.
Description:
Brass octagonal base incised with 4 flower designs and mesh of lines and dots. Compass affixed below base. Gnomon is needle perpendicular to diameter of brass circle. Fits into round wooden box with brass clasp and hinge.
Acquisition Information:
Transfer from National Gallery of Victoria (NGV), 1939
Discipline: Technology
Dimensions: 2.5 cm (Height), 6 cm (Diameter)

More information

Tagged with: sundials, horology
Themes this item is part of: Science & Measurement Collection
Primary Classification: HOROLOGY
Secondary Classification: Sundials
Tertiary Classification: germany
Inscriptions: Inscribed with hours in roman numerals for northern hemisphere, circle hinged to base and passes curved scale calibrated in degrees 10 20 to 80 from vertical to horizontal in arabic numerals.
Back inscribed 'Eleva Pol, Neapolis Rom Strasburg 48 Ingolstadt 48 L.Grassl'
Maker: Lorenz Grassl, Augsburg, Swabia, Bavaria, Germany, circa 1750-1800

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