the first two links are to Wikipedia articles on the tanpura and on jivari for which I wrote most of the present text; the third link is to an article on the use and fine-tuning of the tanpura. The last two links are about the sarangi and its music.
excellent article on voicing:
photo's of (harpsichord) repairs can be seen here:
Fine woodworks, furniture; harpsichord repair and maintenance; Indian instruments
on Nuremberg Iron / P-wire string material:
More interesting sites: