These are the notes of the nycklelharpa. I read treble clef.

At the very top mine isn’t fully chromatic, I have D E F G (no accidentals). You can go up there, I wasn’t really being serious in the picture.

I also own a violin tuned Nyckelharpa. I use this for sounding more like a country-style fiddler.

I do know what is at the top of the violin-pitched nyckelharpa. 🙂
The video called Ceilidh with Capability shows what I mean.
Trio – 2 normal nyckelharpa and 1 oktavharpa (cello pitch)