Refractometer

I looked on ebay and there are tons of them and I am worried about getting a knock off one that will fail prematurely. Do you guys have a link to the one/brand/modle you got.

Thanks
 
<a href=showthread.php?s=&postid=13321908#post13321908 target=_blank>Originally posted</a> by aww_420
no matter a refracto is a refracto i always check ebay before i buy anything. then here

I doubt this
 
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