The camera obscura pictured here was built by Jonathan Fisher and actually folds shut into a suitcase-like holder which could be easily transported.
The camera obscura concept is not unlike a pinhole camera in that the image is taken in through a small opening and projected onto another surface (in this case it would be projected onto paper placed inside the curved enclosure at the bottom of the object).
There it could be traced thus creating an accurate reflection of what the eye would see from the same location,
