Dollond 4-inch Astrological Reflecting Telescope

Description:

Dollond 4-inch Astrological Reflecting Telescope, c. 1830, with 52-inch lacquered-brass body tube, rack-and-pinion focusing, star finder and eyepiece extension, axis mounted with 9-inch vertical transit circle divided 0-180-0o by 10s, twin verniers, bubble level and gimbaled lamp, rod-operated vertical adjustment, mounted on twin supports to inclined alt-azimuth mechanical tripod with horizontal circle divided I-XII-I-XII, subdivided 20-40", with rod operated adjustment, counter-weighted with arc support, on folding mahogany tripod, ht. 80 in.; with fitted mahogany case for body tube and various accessories.
Estimate $8,000-12,000