Brass framed pocket sextant.

Pocket sextant made by John Dollond, London, about 1800. Lacquered brass frame and limb, a hinged wooden handle. Signed on the index arm: Dollond London. Inlaid silver scale from -2° to 154° every 30', measuring to 129° (digits read from the pivot). Silver vernier to 1', zero at the left. There is no tangent or clamping screw; the index arm is moved by a milled knob along a rack on the back of the limb. One shade (red). Index- and horizon-glass adjustment by screws. Magnifier (single lens) on a 25 mm swivelling arm. Telescope bracket without adjustment. Telescope (43 mm) erect image, a sliding shade (red). With box.