This 30x Loupe Folding Pocket Magnifier Jeweler loupe boasts excellent magnification. You can pop it in your pocket it is superb for reading hallmarks. Compactly sized and made from solid stainless steel with an attractive chrome silver finish and a crystal clear view. The Folding Pocket Magnifier is 30x 21mm Four times more powerful than the average (10x) loupe at an amazing 30x magnification. Folds into case to protect lens and comes in its own box. Perfect for coin and stamp collectors jeweler’s checking hallmarks and for anything close up.