A French Louis XVI brass surveyor’s sighting ruler Veuve Lennel, Paris, circa 1780 The brass rule with chamfered straight edge and signed V’e Lennel AParis, the ends applied with opposing hinged sighting vanes each pierced with alternate arrangement rectangular aperture for sighting wire and a hairline slit, 49cm (19.25ins) long. Veuve Lennel is recorded in Daumas, Maurice SCIENTIFIC INSTRUMENTS of the 17th & 18th Centuries and their Makers through his presentation of a transit instrument for assessment by the Academie in 1774. He succeeded his Master, Canivert, and worked from the sign ‘A la Sphere’ at the ‘Quai de l’Ecole entre le café de Parnasse et le Miroitier’. In 1781 he was serving as engineer to the King and Navy and is thought to have died 1784; his widow is believed to have continued to manage the business for a short period after his death.
A French Louis XVI brass surveyor’s sighting ruler Veuve Lennel, Paris, circa 1780 The brass rule with chamfered straight edge and signed V’e Lennel AParis, the ends applied with opposing hinged sighting vanes each pierced with alternate arrangement rectangular aperture for sighting wire and a hairline slit, 49cm (19.25ins) long. Veuve Lennel is recorded in Daumas, Maurice SCIENTIFIC INSTRUMENTS of the 17th & 18th Centuries and their Makers through his presentation of a transit instrument for assessment by the Academie in 1774. He succeeded his Master, Canivert, and worked from the sign ‘A la Sphere’ at the ‘Quai de l’Ecole entre le café de Parnasse et le Miroitier’. In 1781 he was serving as engineer to the King and Navy and is thought to have died 1784; his widow is believed to have continued to manage the business for a short period after his death.
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
