Alternative over/under viewing device

Mathew Orman from polish/american Tyrell Innovations Inc. has designed and markets a viewing device that uses adjustable first surface mirrors.
This overcomes two flaws of the KMQ viewer : its fixed spreading angle and its prismatic effect.

Find more here:
http://tyrell-innovations-usa.com/shop/index.php?page=shop.product_details&flypage=flypage-ask.tpl&product_id=32&category_id=6&option=com_virtuemart&Itemid=4