Office Petals Roll Ruler Parallel Ruler, Multi-purpose Drawing Rolling Ruler Rolling Ruler, for Art Measurement Tool Multi-purpose Rolling Rule Measuring, Drafting (Scales 30Cm)roller scale for engine

OFFICE PETALS LINOGRAPH Roller Scales (Multicolor, 15 Cm 30 Cm) More details: each centimeter has a circle hole for drawing circles and ellipses; This drawing ruler is built in roller, clear scale, easy sliding, stable drawing, not easy to skew, clear scale, easy to observe; There are various formulas on the roller, which can be calculated quickly in use Multiple uses: whether you are an artist, student, pattern maker this measuring rolling ruler is a good helper for your work or study; It can help students develop their own manual skills as well as their imagination to draw different design pictures Quality material: our measuring ruler tool is made of transparent plastic; It is light-weighted, easy to carry; Transparent material allows you to draw without ignoring some important figures or words Practical gift: the plastic ruler can be an ideal gift for your friends, family and artists in your life, the practical tool can bring them lots of conveniences and further enhance their cr