A fine 19th-Century French lacquered-brass and steel sphygmographe

A fine 19th-Century French lacquered-brass and steel sphygmographe

细节
A fine 19th-Century French lacquered-brass and steel sphygmographe
stamped Breguct and Breveté S.G.D.G., no. 25541, with ivory pad, black ribbon tie, clockwork mechaism with stop arm and recording card holder with wood-handled writer arm, in the original plush-lined leatherette-covered case, a flap in the lid holding four used recoding cards with names and dates for 1889, 1894 and 1919(2), the lid stamped SPHYGMOGRAPHE DE MAREY
8in. (20.3cm.) wide