That's a German technique,
There are 2 primary schools of Fachwerk, as I understand it. One uses a lot of curvy, ornate bracing
The other uses a few straight braces. THe latter is common in Switzerland.
THe system used is still a scribe system, but not as involved as the French scribe where you have to individually map each joint. You scribe only timber locations, which accounts for any irregularity in straightness, but can't handle twist or inconsistent dimensions. As a result, timber frames were made only from good stock, cut to exact dimensions.
The joints can then be mapped mathematically. You trust that the timber at the joint is true to the required dimensions and lay out the joint using the edge of the timber as a reference. Joint mapping works like square rule, only omitting the step of cutting housings.
Scribing is not lost in Switzerland, it's still used by most. I was told straight out, you never trust even the best machined wood to be straight, you always will scribe it.
Swiss buildings are always made of old spruce and fir, be it 900 years ago or today. Really the forest situation is very similar to what it would have been in the Middle Ages (They never cut them down)
The Swiss way of taking car of a historically significant building is to take it down, take it apart, and put it back together in such a way as that you can barely even tell they did anything.
