ScrollPoint™ mouse is an IBM product based on the research conducted here at Almaden (check this page for more information). It has been shipped with various IBM desktop PCs. It is also available at ShopIBM (select ScrollPoint Pro, or wireless keyboard and mouse kit).
ScrollPoint™ mouse offers high scrolling resolution and wide dynamic range, sub-line scrolling accuracy, smooth scrolling motion, uniform control feel across document sizes, new mouse body and scroll stick designed for comfort and performance, three programmable buttons and many other features.
ScrollPoint II and III ScrollPoint Pro