£100
Ø AN 11½IN. RADIUS VERNIER OCTANT BY SPENCER, BROWNING & RUST, LONDON, CIRCA 1840
the ebony 'T' frame with inset ivory maker's plate and scale marked 'SBR' to centre, brass index arm, pinhole sights and shades, contained within stepped keystone case with decorative lock plate -- 13½in. (34.5cm.) wide, IDN: YH9XLF88; together with a surveying level for the Board of Ordinance; and a telemeter in a leather case
(3)
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