The tim holtz idea ology design ruler is a clear acrylic ruler perfect for a range of crafts offering an all in one design for a multitude of tasks youll be able to create precise lines and cuts with ease with this handy tool the transparent ruler measures 12 inchesit features a grid background for perfect placement a centre measuring guide a straight edge for drawing lines a metal edge for cutting and evenly spaced holes for paper piercing size 30 cm 12 inchesmeasurements only in in