An 18th-Century German gilt equinoctial compass dial, signed I G V , the folding hour ring with engraved numerals III - XII - IX , with spring loaded folding gnomon, folding latitude arc graduated 20°-80°, the octagonal gilt horizontal plate with engraved decoration, the compass with engraved, silvered rose and blued steel needle with brass cap, the underside engraved with the latitudes of 11 European cities, in contemporary silk-lined, leather-covered case -- 2 1/8in. (5.2cm.) long ; together with an instruction sheet, the recto titled Gebrauch dises Compasses with the maker's name at the foot Johann Georg Vogler, Compass-Macher in Augsburg , the verso titled Elevatio Poli , and listing the latitudes of 157 European cities (folds a little worn) See Illustration (2)
An 18th-Century German gilt equinoctial compass dial, signed I G V , the folding hour ring with engraved numerals III - XII - IX , with spring loaded folding gnomon, folding latitude arc graduated 20°-80°, the octagonal gilt horizontal plate with engraved decoration, the compass with engraved, silvered rose and blued steel needle with brass cap, the underside engraved with the latitudes of 11 European cities, in contemporary silk-lined, leather-covered case -- 2 1/8in. (5.2cm.) long ; together with an instruction sheet, the recto titled Gebrauch dises Compasses with the maker's name at the foot Johann Georg Vogler, Compass-Macher in Augsburg , the verso titled Elevatio Poli , and listing the latitudes of 157 European cities (folds a little worn) See Illustration (2)
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.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
