A Michel Cadot brass Butterfield-type dial, French, dated 1742

A Michel Cadot brass Butterfield-type dial, French, dated 1742,
signed Cadot A Paris, 1742, the octagonal dial with three chapter rings for 40, 45 and 49 degrees latitude, black enamel inlay between the rings, inset compass well, adjustable bird gnomon, the revers with latitudes for twenty three mostly French towns,
3in x 2 1/2in x 1/3in (7 2/5cm x 6 2/5cm x 8 3/4cm)
Provenance:
Trevor Philip & Sons, Ltd., London, 1986.
Private collection.

Michel Cadot was apprenticed to Jean-Baptiste-Nicolas Delure in the Corporation des fondeurs, 1718; he was son-in-law of Henry Macquart.