Tonometer (sphygmomanometer) with aneroid manometer, tubing, bellows and arm-cuff in brown plastic case, type invented by Dr. H. Von Recklinghausen, German, 1920-1940 Tonometer (sphygmomanometer) with aneroid manometer
Pachon oscillometer sphygmomanometer, by Boulitte, with arm cuff and instruction leaflet by Down Bros., all in black leather case, 15-21 rue Bobillot, Paris, France, c. 1940. Pachon oscillometer sphygmomanometer 1935-1945