10X20 lightweight hexagonal triplet loupe, best large loupe Type_Digital Scales part of which will be

part of which will be light and part of which will be dark

please check carefully that you are buying the correct pen-probe

Point it at a fluorescent light and see the dozens of lines caused by the gases burning inside the tube

00) gemmological microscope

Hundreds of stones [4]

10X20 lightweight hexagonal triplet loupe, best large loupe Type_Digital Scales part of which will beSummary 10X20 by Quicktest (10X magnification, 20mm diameter lens) 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) * useable diameter of this lens (allowing for the rim that holds the lens in place) 18. 5mm OPTICAL QUALITY basic good VERY GOOD exceptional There are also reviews of loupes, click here. Comments Engraved with a