phi-Ruler
Designed by philosophy professor Foad Dizadji-Bahmani, the phi-Ruler is an elegant and modern work of functional art. Crafted from 1mm thick solid brass, it has 1″ and 1cm spaced holes in its center for drawing perpendicular lines, arcs, circles, and marks for drawing Golden Rectangles.
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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