A large example (38 cm lenght for the telescopes) of a double telescope brass graphometer signed “Canivet à Paris à la sphere” and datable around 1760.
The heavy instrument is superbly and deeply engraved floral paterns and a double scale divided in 0 to 180 and 180 to 0.
The optics of the two telescopes are in in working condition.
The instrument is complete with its balljoint and its small stand.
A rare instrument in its original case. The case is a little worn but without lack.
Size of the case : 41x21x15 cm
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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.