Large wooden octant of HADLEY type, with 2 inputs with sighting pinnules and 1 set of 2 movable filters, without handle for holding the instrument which will come later.

Literature : John Hadley (1682-1744) was the inventor of this type of octant with wooden limbs with "transverse" divisions.

Reference :

- similar to the Getty Museum

- ill. p. 112 "The Marine Antiquarian" Jean Randier

- ill. p. 97 "The Instrument of Marine" Jean Randier.

Dimensions : height of 51,5 cm x width of 41,5 cm.

England circa 1750/70.

Reference : D / BT 1

Price and additional photos on request. 

Also discover many more marine chronometers, octant and sextant in the dedicated section of our French website : « Octant, sextant et chronomètre ».