A perfect and nice example of a silver and gilt brass hexagonal universal equinoctial sundial signed “Johann Willebrand in Augspurg 48”, datable from the end of 17th century or circa 1700.
A compass with its original needle is embedded in the centre of the plate. The hour dial, nicely decorated, is adjustable in inclination according to the latitude of the place of observation. The degree of latitude is given by an arc, foldable and graduated in degrees from 0° to 90°.
The gnomon, a slim brass rod mounted on a pivot axis, is articulated.
On the main plate a v-shaped roccocco gilt brass stand supports a small silver plumb bob.
On the underneath of the compass are engraved the names and latitudes of 35 european cities. on the underneath of the plate, the large Willebrand’s signature.
A fine example of dial by this important German maker.
The dial measures 54×57 mm.
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Established by Alexandre Piffault in 2014 and based in Paris at 5 rue de Condé, 75006, very close to Odéon, Le Zograscope specializes in antique and rare books in Science, Medicine and Technology, and rare antique instruments in the same fields. We have especially a strong interest in early and continental microscopy, early and special mathematical/drawing instruments, medical and surgical instrument, and rare technology.