SIGNED TROUGHTON & SIMMS, LONDON
Details
A 19TH CENTURY BRASS SURVEYING ARM PROTRACTOR,
signed Troughton & Simms, London
with silvered scale, rack and pinion motion, makers label, in shaped mahogany case--9in.diam.
signed Troughton & Simms, London
with silvered scale, rack and pinion motion, makers label, in shaped mahogany case--9in.diam.