191. AN 18TH-CENTURY 2¼IN. REFRACTING TABLE TELESCOPE BY RAMSDEN, LONDON
the 24½in. lacquered-brass main tube with rack- and-pinion focus extension to threaded sighting tube, mounted on folding tripod stand with levelling screws, bubble level, rack-and-pinion elevation, horizontal vernier above feet and elevation quadrant, approximately -- 20 x 35in. (51 x 89cm.)