Clitographe by Jules Lefebvre, Paris, France, circa 1870.
With original tripod and case.
Steel frame marked: NIVEAU de PENTE PARLANT ou CLITOGRAPHE LEFEBVRE (35 x 26 cm.)
Patented in England and France, 1862.
Gold Medal awarded at the Paris Exhibition 1860.
See the collection of the Science Museum, London. OBJECT NUMBER:1939-358.
Jules Lefebvre & Cie, 54 Rue des Tournelles, Paris.
LEFEBVRE’S CLITOGRAPH; or, APPERATUS FOR LEVELING AND MEASURING ANGLES.
The Clitograph, invented by M. Lefebvre (of Rouen), architect at Paris, 54, Rue des Tournelles, considerably shortens the time hitherto required by means of ordinary instruments for the purposes of leveling, measuring angles, &c. The uses to which the Clitograph may be put are very general, its shape only varying according as it is used in workshops for setting up machinery, for building purposes, or for surveying, leveling, &c. The Clitographs replace Spirit levels and Plummets at the same time. They indicate Angles in Decimal or Duodecimal Tangents or in Degrees and Minutes of the circumference, if required.