{"product_id":"helix-12-in-circle-ruler","title":"12 in. Circle Ruler","description":"\u003cp\u003eInsert your pencil or pen through the appropriate hole, hold the center disk steady, and rotate the ruler around that fixed point. The 1\/8-inch hole spacing provides precise diameter control without fiddly adjustments.\u003c\/p\u003e\n\u003cp\u003eDual measurement systems run along the ruler's edge, metric on one side, 1\/16-inch increments on the other, making it useful for general measuring and layout work beyond circle drawing. Clear acrylic lets you see your work beneath, crucial for positioning circles accurately relative to existing elements. The integrated handle makes pickup effortless from flat surfaces where thin rulers typically require fingernail prying.\u003c\/p\u003e\n\u003cp\u003eTechnical illustrators and designers appreciate how this tool maintains geometric accuracy without the mechanical complexity of traditional compasses. Whether you're drafting mandalas, plotting circular compositions, or creating precise technical drawings, you get repeatable results without calibration or point replacement.\u003c\/p\u003e","brand":"Helix","offers":[{"title":"ruler\/compass","offer_id":48102295109861,"sku":"30763","price":4.48,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.texasart.mom\/products\/helix-12-in-circle-ruler","provider":"Texas Art Supply","version":"1.0","type":"link"}