Reproduction of a siamois type knife by cutler Ralph Ranoweicki.  Thanks to Rob Shilling for posting pictures and information. (June 30 2005)

Here are the dimensions of the knife.

Overall open: 8 1/4"
Overall closed: 5 1/8"
Handle: 4 3/4" walnut.
Blade: 4 1/2" from tip to "locking knob", Approx 3/16" at thickest part.
 

Oeuvre de Jean Santos, France - avril/2005  (Couteau style "jambette" inspiré des illustrations de Bonderoy)

Knife created by Jean Santos of France (blacksmith and knifemaker) - created april/2005