Ring Ruler Mini - Adjustable Size Circular Ruler and Stencil Template (1-3.5 Diameter) – Koala Tools

The Ring Ruler Mini™ is a compact size-adjustable circle ruler. Simply click the zero point end into your desired size and it holds in place for easy measuring, marking or forming. The ergonomic benefit of be able to have your pencil or pen in your hand for marking means that you have greater control of the line densit
The Ring Ruler Mini™ is a compact size-adjustable circle ruler. Simply click the zero point end into your desired size and it holds in place for easy measuring, marking or forming. The ergonomic benefit of be able to have your pencil or pen in your hand for marking means that you have greater control of the line density and pressure. Expanding and contracting the circle is as easy as pulling the ruler to form your desired size. Because there is no needle like a pivot-point compass, the Ring Ruler is safer for children and can be used without supervision. The Ring Ruler Mini also provides useful circular metrics like diameter and can also be used as a 360 degree protractor. Available in US Standard 

Nifty Ruler with an Adjustable Diameter - No need for circle stencils or a pivot-point compass with a dangerous needle. Our ingenious mathematical

Koala Tools - Mini Ring Ruler for Circle Templates and Surfaces, Circular Ruler with 1 to 3.5-inch Adjustable Diameter, Geometric Tool for Drawing

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The Ring Ruler Mini™ is a compact size-adjustable circle ruler. Simply click the zero point end into your desired size and it holds in place for easy

Ring Ruler Mini

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Nifty Ruler with an Adjustable Diameter - No need for circle stencils or a pivot-point compass with a dangerous needle. Our ingenious mathematical ruler comes with a 1 to 3.5-inch adjustable diameter, so you can draw perfect circles without the hassle of using other tools. Swift, Precise Measurements - You can never go wrong with your measurements while using this efficient drawing tool.

Koala Tools Mini Ring Ruler - US Standard

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LOKUNN 3 Pcs/Set Circle Ruler, Circle Template for