Solid Brass and Hardwood 11.5-inch
Radius Octant with Hardwood Case
This is a beautiful and unique solid brass and hardwood reproduction of an early 1800's 11.5-inch radius octant
(predecessor to the modern sextant).
The term "octant" means 1/8 of a circle, or 45 degrees.
Because of the arrangement of the mirrors, sextants and octants can measure twice the
angle of the scale.
Although a reading of 90 degrees was possible for octants, 80 degrees was considered a practical limit.
This Stanley London® octant is large and solid, measuring 11 1/4 inches (28.6 cm) by 14 inches (35.6 cm) tall,
5 inches (12.7 cm) deep, and weighs 2 pounds, 9 ounces (1.2 kg).
There is a hinged magnifier to help read the German Silver vernier scale, and there are six swing-arm filters.
Like most octants, this model does not have a telescope, but instead has the proper style brass adjustable peep site.
On the back of the octant is a large rounded hardwood handle.
Each octant is marked "Stanley London 1830" with a unique serial number on the frame.
The octant comes with a large beautiful blue felt-lined hardwood case with a front brass clasp.
Custom brass plaques are available for the hardwood box.
While this octant is fully functional, it is not calibrated and is not intended for navigation.
The octant with hardwood case is available for $275.