Description
A quite unusual brass French clinometer and/or graphometer with a double rotative balljoint.
The instrument is not signed, just bearing by ink, the name “graphometer” on the alidade so the instrument is French from the early 19th century.
The brass instrument can be used like a simple clinometer or like a graphometer.
Very craft construction.
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Dealer information
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.
Personnal website : https://www.lezograscope.com/