Horizon Ruler
This stainless steel tool helps draw circles, arcs, and straight lines, and can also measure. It combines a protractor, straight edge, T-square and compass functions, and can measure in inches, centimeters, picas, and pixels. It packs neatly in your wallet alongside your credit cards.
Crowdfunded projects pose a degree of risk for buyers, so be sure to do your research and fully read the seller's detailed description and production plans before plunking down your hard-earned money.
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