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A multi-functional ruler that is designed to make sketching handy. With golden ratio grid lines, we can easily draw any linear lines, shapes and forms for harmony design. An ultimate design tool for anyone and easily fit in your pocket.


Product Size



Height: 61mm | Width: 95mm



Leather Holder

Height: 68mm | Width: 105mm

・Italian leather




Phi Ruler (Copper) Black

$42.00 一般價格
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