Marey sphygmograph and case
1857-1870
Dudgeon sphygmograph
Dudgeon sphygmograph by Krohne and Sesemann
Marey sphygmograph, Mahomed's modification
1873-1900
Dudgeon sphygmograph
Boulitte sphygmograph no.11867 with leather arm-strap
1880-1930
Dudgeon's sphygmograph
1901-1920
Dudgeon sphygmograph
Dudgeon sphygmograph by Millikin and Down
1876-1890
Dudgeon sphygmograph by Maw
1870-1901
Dudgeon sphygmograph
Cased Marey sphymograph
1885-1910
Part of sphygmograph
1890-1910
Dudgeon sphygmograph by E. Hymans
1885-1930
Jacquar sphygmograph in case
Sphygmograph by G. Boulitte
Tambour from a sphygmograph
Marey sphygmograph
1872-1900
Ludwig sphygmograph by Petzold, Leipzig
Sphygmograph, case only
1801-1900
Marey Sphygmograph
1872-1901
Broodlindt type sphygmograph
1885-1930
Dudgeon sphygmograph
Early type of Richardson sphygmograph
circa 1883
Dudgeon sphygmograph by Mayer and Meltzer
Dudgeon sphygmograph
Dudgeon sphygmograph by Krohne and Sesemann
1870-1900
Richardson sphygmograph (modified Dudgeon) c.1906
1901-1910
Part of a Sphygmograph(?) gilt brass and nickel pl
1880-1920