Daylight UN90946 Flexilens On 18-Inch Clamp
These handy magnifiers can be clamped to frames, table tops and desks to work where you do.  Flexilens On Clamp has a long flexible 18 inch arm which provides an uninterrupted view between magnified and non magnified work.  It can be clamped onto table tops frames or any other solid object and is easily movable.  The lens is acrylic and 5 inches in diameter with a 1.75X magnification. Color:  White.