SE - Loupe Set - 30x (4 Pc), 10x (4 Pc)
The set is great for rock collectors, coin collectors, hobbyists, jewelers and anyone else who requires distortion free magnification. The 10x power loupe has a focal distance of 1 in. (26mm) with 21mm dia lens size. The 30x power loupe has a focal distance of 1/2 in. (13mm) with 21mm dia lens size.