Details
JOHN BROWNING, London
A lacquered-brass heliometer/micrometer, with 1¼-inch split lens adjusted by knob with silvered-scale divided 0-95 and cam divided 0-9 -- 6in.(15.5cm.)wide, in fitted mahogany case
A lacquered-brass heliometer/micrometer, with 1¼-inch split lens adjusted by knob with silvered-scale divided 0-95 and cam divided 0-9 -- 6in.(15.5cm.)wide, in fitted mahogany case