BALD Technologies just released a frame designed to be quickly dropped into a work surface — ultimately allowing users to precisely adjust the viewing angle of the touch screen. The two part, actuator driven mount moves the interior frame from horizontal to vertical and anywhere in between ultimately solving viewing angle problems associated with horizontally mounted monitors. This allows a touchscreen monitor to be mounted on any flat surface (e.g., counter, table or desk) and still be angled and tilted towards the user.
Monitors can be mounted horizontally or vertically. Details are here.