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Details
A RARE 14½IN. RADIUS LACQUERED BRASS VERNIER SEXTANT BY RAMSDEN, NO. 828, CIRCA 1784
the single-cast cross-bar frame signed on the arc and divided to 135°, sighting tubes with common revolving shades, mirror aligning device, numbered behind index mirror -- 17in. (43cm.) high overall.
the single-cast cross-bar frame signed on the arc and divided to 135°, sighting tubes with common revolving shades, mirror aligning device, numbered behind index mirror -- 17in. (43cm.) high overall.
Literature
Hawkes, N: Early Scientific Instruments, p.39 + plate, describes a similar example numbered 842.
Special notice
No VAT will be charged on the hammer price, but VAT at 17.5% will be added to the buyer's premium, which is invoiced on a VAT inclusive basis.