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<p>[QUOTE=&quot;ToddB67, post: 2848953, member: 18134&quot;]Kirkuleez,</p><p><br /></p><p>That&#039;s correct ! Rounded four places to the right of the decimal would be .0008&quot; or eight-ten-thousandths. One micron = .000039 inch. (The link and additional book source below give proofs.)</p><p><br /></p><p>Goes without saying, .0008&quot; is <i>really</i> thin ! ....a little less than .001&quot;, or less-than-one-thousandths of an inch of pure copper on modern Shield pennies. No wonder ground minerals eat through the plating and into the zinc/copper alloy planchet so relatively soon !&nbsp; <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie11" alt=":rolleyes:" unselectable="on" unselectable="on" /></p><p><br /></p><p><span style="color: #0000ff"><b>Link</b></span>: <a href="http://practicalmachinist.com/vb/cnc-machining/how-big-micron-printable-sheet-169" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://practicalmachinist.com/vb/cnc-machining/how-big-micron-printable-sheet-169" rel="nofollow">http://practicalmachinist.com/vb/cnc-machining/how-big-micron-printable-sheet-169</a></p><p><br /></p><p><span style="color: #b35900"><b>Book</b></span>: <span style="color: #000000">Machinery&#039;s Handbook, 22nd Edition, page 2424, titled &quot;Micrometers (microns) to Microinches&quot;</span></p><p><br /></p><p><span style="color: #000000">Thanks !........ToddB67</span>[/QUOTE]</p><p><br /></p>

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