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<main><figure><img alt="Slide Rule Collection" src="../media/diary/779.jpg"><figcaption>Slide Rule Collection<span class="right">16I03</span></figcaption></figure>
<h2>The slide rule is a mechanical analog computer.</h2>

<p>The rulers each have a logarithmic scale(the spacing between the lines on the scale become smaller as the value increases), it is possible to ali