Support BladeForums! Paid memberships don't see ads! I've got a Bausch & Lomb Hastings Triplett 20X loupe to examine scratch patterns on the bevel as I sharpen my knives. https://www.amazon.com/gp/product/B000OVHUPS/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1 While not an essential tool for knife sharpening, I do find it informative to view scratch patterns from the various grits as I go through a stone progression. This particular loupe is 8.3mm in diameter, and is relatively hard to use. Can anyone recommend a better 20X loupe? By "better" I mean either easier to use, or a better image, or, preferably, both. Also, I would like to get another loupe in a higher magnification level, so, can anyone recommend a 30X and/or 40X loupe? I am also open to other magnification options beside the traditional loupe. TIA.