A good example of a small model (18,7 cm diameter) of a French graphometer signed “Bernier à Paris” and datable around 1760.
The graphometer is engraved with one scale of 0 to 180 degrees. In its center, a compass with its original needle.
The instrument is complete with its ball joint with its small stand.
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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.