A very rare small/miniature example of high quality for this dip circle with the rare signature “Chasselon à Paris N° 46” and “Service hydrographique de la Marine, n°1”.
Chasselon was the successor of Brunner in Paris and, as him, manufactured very high quality precision physical and surveying instruments.
This dip circle is a small/miniature example measuring 17×12 cm overall.
The instrument is put on a tripod leg we can srcrew in heigh and a circle divided in 360°. Two magnifiers allow a fine reading for the declining glazed needle.
The condition is excellent : the original lacker is still remaining and the instrument in perfect working condition.
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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.