Fly system

src: i.ytimg.com A fly system , or theatrical rigging system , is a system of rope lines, blocks (pulleys), counterweights and related devic...

Stereoscope

src: upload.wikimedia.org A stereoscope is a device for viewing a stereoscopic pair of separate images, depicting left-eye and right-eye vi...

Oval Office

src: cdn.vox-cdn.com The Oval Office is the working office space of the President of the United States located in the West Wing of ...