Spezial-prospekt Physiologisch-graphischer apparate" -- 1906 German Trade Catalogue Advertising Medical Equipment by Ludwig Castagna

Vienna: Ludwig Castagna, 1906. Very good. Toned with mild spotting.. Illustrated trade catalogue advertising scientific/medical diagnostic equipment designed by Ludwig Castagna (1867-1944), an Austrian inventor of medical equipment. Includes some interesting devices in this catalogue, most illustrated and each with pricing and a description of its potential uses and applications. Includes a "Sphygmomanometer" which measures blood pressure, a "Cardiograph" for recording heartbeats, and an "Onychoskop" which appears to record blood pressure from under the fingernails. An interesting chapter in medical diagnostics. Single vol. (9" by 5.75"), pp. 12, illus., in original illus. self wrps with image of one of the devices on the front.