A nicely decorated scissor-type parallel rule made in brass and signed ” G. Adams London”. We can date the instrument from 1750-1760s’.
The paralle rule is decorated on both sides with repeated motif of beech leaf. On the top side is engravec a square protractor, on the underside a English sector with different scales.
The instrument measues closed : 15,2×4,6 cm
Despite two traces of rust on the underside, good condition. The mecanisms work perfectly.
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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.