Solar chronometer, “Chronomètre Solaire“, P. Flechet et Cie., Paris, circa 1875.

A rotating 22 cm diameter convex dial, the outer edge of the dial, divided in 5 minutes clockwise, with the hours on Roman numerals: XI VIII VII VI V IIII III II I XII XI X IX VIII VII VI VIII III. With a fixed 5 minute vernier scale.

Inner dial marked:

CHRONOMETRE SOLAIRE

Breveté

SGDG

P.FLECHET ET Cie

PARIS

Centre of the dial with a rotating 360 degree brass bearing circle, divided in 30 degrees, with an arrow pointer.

Target analemma engraved in French: TEMPS VRAI and LIGNE DES EQUINOXES with the four seasons, months, subdivided in increments of five days.

Brass base marked with cardinal points: O, SUD, E.

Dial and base both numbered: 11.

Literature:

Chronomètre solaire universel et portatif servant à déterminer la latitude, la méridienne et l’heure moyenne. Paris : impr. de V.-A. Cresson, DL 1879.

The British Sundial Society Bulletin 17iii Sept 2005, page 98.