A rare early 19th Century brass plain theodolite, signed Dollond London, with bubble level over telescope with rack and pinion focusing, dust cover, cradle over inverted half circle, divided 90°-0°-90°, inset silvered scale and vernier, magnifier(lacking lens holder), on twin A frame supports over compass box, engraved silvered scale divided quadrantly and 10°-360°, edge-bar needle, cap and clamp, bubble and cross bubble, the horizontal plate divided 10°-360°, with twin vernier and magnifier (lacking lens holder) with tangent screw and clamp, over pillar with back sight telescope attachment, with rack and pinion focusing and latitude adjustment, on four-screw tripod mount - 14¾in.(37½in.)high