It measures approximately 6 1/2" x 5 1/4" x 1 5/8" (165 x 133 x 41 mm) closed and about 6 1/2" x 5 1/4" x 7 1/4" (165 x 133 x 184 mm) open

This is a new 2.5X large folding magnifier

Great for quality magnification of gemstones, reading, map reading, etc

Allow hands to be free to work

Magnification makes fine work much easier

The lens measures approximately 4 1/8" (105 mm) in diameter