Tru Vue Viewers
- Model 502
- Patented in 1875, this unit presents stereo views from a rectangular
slide which moves down as the advance lever is operated.
- Film Type
- Pat. No. 90564 places this item in the 1869 period. No doubt this
item is newer but still an ancient example of three-dimensional
photography. Shown with original box, flyer and 2 black and white
films-Carlsbad Caverns 1 and 2. This viewer presents images from a film
roll- similar to movie film.