Alvin Rolling Parallel Ruler (306)
<div style="text-align: left;"><strong>[Product Information]</strong>
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<li><span class="a-list-item"> A multi-purpose drawing tool made from high impact plastic for students， artists， and designers. </span></li>
<li><span class="a-list-item"> Graduated in both English and metric. Includes many useful formulas and conversion factors. </span></li>
<li><span class="a-list-item"> Draw horizontal and vertical parallel lines with ease. Draw circles， curves， or arcs. </span></li>
<li><span class="a-list-item"> Use the built-in protractor to draw angles. </span></li>
<li><span class="a-list-item"> Blister-carded， instructions on back. </span></li>
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<img src="http://ecx.images-amazon.com/images/I/51WZlI1NUsL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51YqgPEpabL.jpg" noproxy>