Ruling pen

<h2 id="description">Description</h2>

<p>A ruling pen contains ink in a slot between two flexible metal jaws, which are tapered to a point. It enables precise rendering of very thin lines.<a class="footnote-ref" id="fnref:2" href="#fn:2"><sup>2</sup></a>  The line width can be adjusted by an adjustment screw connecting the jaws.<a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a> The adjustment screw can optionally have a number dial.
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<h2 id="history">History</h2>
<p>In the <a href="/facts/Soviet_Union/m7wWsPto">Soviet Union</a>, ruling pens were widely used by women for <a href="/facts/Eyebrow/nNLuVRU7">eyebrow</a> <a href="/facts/Hair_removal/Auc4Uyc3">hair removal</a>,<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> being used as <a href="/facts/Tweezers/9vPbIvvh">tweezers</a>.
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<h2 id="see-also">See also</h2>
<ul><li><a href="/facts/List_of_pen_types,_brands_and_companies/FfLKhXbu">List of pen types, brands and companies</a></li>
<li><a href="/facts/Technical_drawing_tools/PGYsVyNB">Technical drawing tools</a></li></ul>

<h2 id="external-links">External links</h2>
<ul><li>Rising, Justus; Reese, Harry (1955). <a href="https://www.youtube.com/watch?v=2BAbgMexaUg"><i>Tracing With Ink</i></a> (16mm film). Purdue University – via A/V Geeks on YouTube. Summary: "Demonstrates tracing on cloth. Shows procedures for handling the ink bottle and for filling, adjusting, using, cleaning and sharpening pens."</li></ul>

<h2 id="references">References</h2>

<ol>
<li id="fn:1"><p>Cicale, Ann (2006). The Art & Craft of Hand Lettering. Sterling Publishing Company, Inc. p. 96. ISBN 978-1-57990-809-6. <a href="978-1-57990-809-6" target="_blank">978-1-57990-809-6</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li>
<li id="fn:2"><p>Cicale, Ann (2006). The Art & Craft of Hand Lettering. Sterling Publishing Company, Inc. p. 96. ISBN 978-1-57990-809-6. <a href="978-1-57990-809-6" target="_blank">978-1-57990-809-6</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li>
<li id="fn:3"><p>Kirby, Richard Shelton (1918). The Fundamentals of Mechanical Drawing. J. Wiley & Sons, Inc. pp. 8–9. <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li>
<li id="fn:4"><p>"Рейсфедер для бровей". <a href="http://www.beauty-practical.ru/2011/10/rejsfeder-dlya-brovej.html" target="_blank">http://www.beauty-practical.ru/2011/10/rejsfeder-dlya-brovej.html</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li>
</ol>

Ruling pen open-in-new

Ruling pen