A very fine Claude Langlois equinoctial sundial, circa 1750

A very fine Claude Langlois equinoctial sundial, circa 1750

2400 euros

Circa

1750

Country of manufacture

France

Categories: Portable Sundials, Timekeeping

Description

A perfect example of a brass and hexagonal universal equinoctial sundial signed “Langlois a Paris aux Galeries du Louvre”. 

A drypoint compass 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 70°. 

The gnomon, a slim brass rod mounted on a pivot axis, is articulated. 

On the up and dow sides are engraved the name of 34 cities with their latitude.

The fine dial is preserved in its shagreen box lined with with red green. 

 

Splendid original condition.

Dial : 8×8 cm ; box : 9,3×9,3 cm

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FR Le Zograscope

Established by Alexandre Piffault in 2014 and based in Paris, 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.

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