A folding telescope alidade with level by Delueil, circa 1850

A folding telescope alidade with level by Delueil, circa 1850

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Circa

circa 1850

Country of manufacture

France

Categories: Scientific, Surveying Instruments & Mining

Description

An folding alidade with telescope with the uncommon signature of Louis-Joseph Deleuil, “Delueil in Paris”, circa 1850.

The telescope is mounted on a long brass ruler graduated with different conversion metric scales. This is also a water level. The telescope can be folded down for easy transportation.

The instrument measures unfolded 60×20 cm. The telescope measures 39 cm lenght.

There is an old restoration with glue at the objective lens (see the last photo) but the optics still gives a clear image and a good/normal magnification.

The instrument was formerly polished.

Lousi-Joseph Deleuil’s instruments, except for his simple microscopes, are not easy to find.

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FR Le Zograscope

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.

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