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<p>[QUOTE=&quot;ikandiggit, post: 925619, member: 16269&quot;]There was a thread a few years ago about this:</p><p><br /></p><p><a href="http://www.cointalk.com/t12690/" class="internalLink ProxyLink" data-proxy-href="http://www.cointalk.com/t12690/">http://www.cointalk.com/t12690/</a></p><p><br /></p><p>I use a number of magnifications. My loupes have 1.5; 4X; 6X and then I can combine the two lenses on one of the loupes to get up to 10X. For detail eg. rpm&#039;s, I use an eyepiece from a video camera which I would guess would be 20X.[/QUOTE]</p><p><br /></p>

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