Tessina

The Tessina (officially created by Arnold Siegrist) is a high-quality 35mm camera patented by Austrian chemical engineer Dr. Rudolph Steineck in Lugano Switzerland, manufactured by Siegrist in Grenchen Switzerland.

It is a very small (2.5x2x1 inch) twin lens reflex, with two 25 mm f/2.8 Tessinon lenses, one for taking the picture, the other for viewing on a tiny ground-glass focusing screen on top of the camera.

A 45° mirror is employed to bend incoming light onto the film, which lies along the bottom of the camera rather than the back to save space.

The film is advanced via a clockwork master spring built into the takeup spool, with a pullout winder like the crown on a wristwatch.

Tessina is hand assembled from more than two hundred precision parts, it contains ruby bearing like swiss watch to reduce friction, each camera is designed for 100,000 pictures.