Folder: Prothesics

313

313

Dutch personal horns. Rotating acoustic listening device developed for the Dutch army as part of air defense systems research between World Wars I and II, 1930s.

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311

German acoustic/optical locator, 1917. A junior officer and an NCO from an unidentified Feldartillerie regiment wearing combined acoustic/optical locating apparatus.

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309

Acoustic listening device developed for the Dutch army as part of air defense systems research between World Wars I and II.

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267

French steel helmet with built-on chain screen to protect soldiers’ eyes, WWI (Life Magazine)

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118

“What to do for a splitting backache…automated caveman gets a rear-end drive”, Popular Science, January 1964

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117

New Mechanical Chiropractor, Modern Mechanix, December 1932 WITH a machine like the one shown below in your home, there’s no longer any excuse for headaches. At least, that is…

120v44n04-13184112fig1

10

El gabinete de mecanoterapia del Dr. Bartrina Costa, Madrid (?), 1919.