R.B. Tolles Lacquered Brass Monocular Microscope

Description:

R.B. Tolles Lacquered Brass Monocular Microscope, Boston, no. 29, c. 1870, curved arm support flanked by two tapered pillars, rack and pinion coarse, and micrometer screw for fine focusing, graduated draw tube, substage with rack-and-pinion X-Y movement, plain and concave mirrors on double-jointed arm, with condenser above, marked on barrel "B/No. 29/Tolles, Boston," ht. 18 in.
Estimate $300-500


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