CIA @CIA
CIA #Museum Artifact of the Week: Stereoscope & Case During #WWII, #OSS photographic interpreters used the stereoscope to analyze photos of enemy territory taken by airplane-mounted cameras. 3D views were possible using stereo image pairs. https://t.co/sgPBU7W0uq #HISTINT https://t.co/B65ReKFyqt — PolitiTweet.org