yes, more than that, many harp builders can’t even say what the sting spacing they have is such and what’s the progression of the strings distance from lower to higher octaves. 🙂
As for Piligrim Clarsach, that might be done for easier reach of the upper strings, something to consider as well…
What is special in sound balance of Tyrolean harps? I have heard a few, but did not notice anything significant. Could you please tell us what you know?
In general I see that harpbuilding offers more freedom to the maker, probably due to the nature of the instrument, than it happens with violinmaking for example, where the maker has to follow strict rules and established procedures. It is all about correct angles and dimensions there:)