well, first of all, the name is derived from two different bows. the holmegaard, a 10,000 year old design named after the area in scandinavia, where it was found and the andaman bow, still in use to my knowledge, named after the andaman islands. the tiller of the two couldn't differ more, however, both have short but wide working areas of the limbs and very narrow, extended, non working tips, which serve as levers. tim baker named a style of bow the "andaman-holmegaard" in his chapter of TBB4, where he talks about design and performance. that's where you'll find pictures and probably dimensions too.