A late George III rosewood cased sympiesometer, by Dring and Fage, 20 Tooley Street, London
A late George III rosewood cased sympiesometer, by Dring and Fage, 20 Tooley Street, London

细节
A late George III rosewood cased sympiesometer, by Dring and Fage, 20 Tooley Street, London
with silvered brass adjustable scales, inscribed IMPROVED SYMPIESOMETER
-- 23½in. (59.5cm.) high