Helix - Circle Ruler

Helix Circle Ruler This dual-purpose ruler also works as a compass, allowing the you to make circles from 1/16 to 12 in diameter. A useful tool for draftsmen, students, artists and crafters who require precise, measured lines. Great for mathematic calculations, technical drawings and designing patterns.

Helix Triangular Scale Rule 30cm

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Helix Angle And Circle Maker

How to use the Helix Circle Maker for bullet journaling

Helix Angle and Circle Maker

Helix 12 inch 30cm Steel Ruler

Combo Scale Ruler, 12/30cm -- Box of 12

Multifunctional Rotatable Ellipse Protractor Ruler Construction Architect Fast Drawing Ruler Children Measuring Scale Ruler - AliExpress

Helix Circle Ruler Ruler, Circle tool, Teaching supplies