What size loupe do I need

[jon]

I would like to buy one to take to the next fair I go to .

I have seen one for sale that is 40x25mm with led light.

Would this be suitable?

Thanks

[Peter]

I use these...I bought a few and they do arrive.

http://www.ebay.co.uk/itm/Foldable-30X-21mm-LED-Fold-Eye-Jewelry-Loupe-Magnifier-Microscope-Glass-Lens-UR-/161836353546?hash=item25ae32c80a:g:LlsAAOSw37tWA6qN

They are not dissimilar to these...which I didn't buy 

 http://www.lighthouse.us/epages/lighthouse.sf/en_US/?ObjectPath=/Shops/leuchtturm_us/Products/LU30LED

[jon]

8 hours ago, Peter said:

I use these...I bought a few and they do arrive.

Thanks Peter 

I will get a couple of those then. Can't go wrong at that price 

[PWA 1967]

Yes i have bought those and spot on,like you say cheap also.

[Peter]

I bought a job lot of them a few years back with a view to selling on ebay,but they are now in every drawer in the house so always at hand. They are easy to chuck in your pocket...you never know when you might need one.

The capsuals I ordered are also VERY SIMILAR  They come in a zip seal bag rather than the trademarked cardboard containers.