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KW Patent Etui
France Version française
Photos by Sylvain Halgand text by Sylvain Halgand. From the collection of Sylvain Halgand. Last update 2014-12-08 par Sylvain Halgand.

Manufactured or assembled in Germany from 1921 to (After) 1928.
Index of rarity in France: Rare (among non-specialized garage sales)
Inventory number: 1340

See the complete technical specifications
Chronology of cameras KW 

It is no fortuity if this camera from  "Kamera Werkstatten" is called "etui" ("case" in English). It is sufficiently flat and of a size that it can look as a cigarette case.
This is a plate camera, but mine has a back for film packs. Apart from its compactness, it is a rather simple and conventional folding camera.
Its use requires pulling the lens stand. It has a hinge at its base to enable its folding upon closure. This articulation makes the need for two supporting legs to maintain the stand vertical in place. When pulling back the stand, the struts are positioned parallel to the two legs and the device can be folded.
The distance setting is not easy to find. The lens being fixed, it can be done only by extending the bellows. In the foreground, at the corner of the bed is a metal part curved as a hook. It locks the lens stand to the boundary of the bed. If you press this part, it is possible to pull the stand and the rail. An index moves on a small distances plate, graduated from 1 to 8, and infinity.

There are two sizes of the same model and within each format, the combinations of shutters and lenses are numerous.

The version presented here has no vertical shift or large viewfinder frame, unlike some other versions.
This is an interesting device in a collection.
 
This unit was sold to the United States under the name Kawee, referring to the KW brand. It was late as evidenced by this 1938 advertisement, extracted from Popular Photography.

KW Patent Etui