as much as i dont want to admit , i use just a standard magnifying glass .. probably 6x , i have a a 10xor 20x but seems how i dont go honing razors for others unless i feel a ruff edge on my face after a 6x check and just how bright a reflection i get in the light i dont check for perfection other then how the hair comes off my face and how it feels ..lol usually this is the case !!

i do find myself on occasion using the 10x or 20x on older wedges though , for some reasons the ones i have picked up have almost all had micro chipping on the edge that isnt visual to the naked eye ...

but again i just hone for myself so long as i get an edge to were " I " want it i skip all the close inspection ..

BTW.. i think in the show and tell there is a link to a nice loupe !! check it out .. looks pretty nice !