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<p>[QUOTE=&quot;satootoko, post: 54579, member: 669&quot;]Doug - have you considered the common optical illusion in photos like that where sometimes the inner circle appears to be raised, other times it appears to be sunken, but actually the circle is an incuse mark and the surfaces on both sides of it are level?</p><p><br /></p><p>I&#039;m with Spider on this one. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie8" alt=":D" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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