10X21 triplet loupe with rim light Digital scales - regular lines - resolution 0.01g 5 x 8cm (7

5 x 8cm (7

even uncut stones

With skill

Under normal circumstances focusing a 20X is painful

Instead of 'simple' lenses

10X21 triplet loupe with rim light Digital scales - regular lines - resolution 0.01g 5 x 8cm (7Details To help you compare the 10X loupes, a summary of this item is shown in blue: SIZE: 10X12 10X13 10X14 10X20 10X21 10X21 10X23 "30X21 (magnification X diameter of lens, mm) OPTICAL QUALITY: basic good VERY GOOD exceptional POWER: 3 of 395 button battery There are also reviews of loupes, click here. Comments Light is as important as magnification, without a good light the best loupe is of little use. Sitting at a desk this isn't a problem, use