• Unbreakable
  • Ruler 20cm with central graduation. Set with precision the distance between the two arms of your compass

How to use the ruler 20cm

règle_étape1_picto_en Place the spike arm of your compass firmly in the notch of the ruler

règle_étape2_picto_enMeasure the space between the spike arm and the drawing end of your compass with the graduation of the ruler

regle_etape3_picto_enDraw your circle