The sextant has a black-lacquered brass Dollond-pattern frame and a wooden handle. The tangent screw and clamping screw are positioned on the back of the index arm. The instrument has two green shades and one green horizon shade. Index- and horizon-glass adjustment is made by screws and capstan screws.

Attached to the sextant is a magnifier on a 100mm swivelling arm. There is also a threaded telescope bracket which is non-adjustable. The telescope is 87 mm in length with an erect image. A second telescope is missing. Accompanying the sextant is a sight-tube, which is 88 mm long, a green shaded eyepiece, a brush, and an adjusting pin. A second magnifier is from another instrument.

The instrument has a bronzed limb with an inlaid silver scale from -5° to 125° by 20 arcminutes, measuring to 108°. The sextant has a silver vernier measuring to 30 arcseconds, with zero at the right.

The sextant is contained in a square fitted wooden box.