Includes: - 1 pc 12 inch (30 cm) parallel glider ruler - 1 pc 6 inch (15 cm) parallel glider ruler Why this set matters - Draw accurate parallel lines, angles and arcs quickly — two sizes let you choose the right tool for large layouts or small detail work. - Transparent plastic construction keeps your work visible beneath the ruler so you can position and align precisely. - Clear printed scale makes measurements easy to read while you glide or roll the ruler into position. Key features - Material: transparent plastic — lightweight and easy to carry between home, school or the studio. - Functions: built-in protractor for angle layout; capable of drawing arc curves, horizontal parallel lines and vertical parallel lines. - Sizes: 12 inch / 30 cm and 6 inch / 15 cm for flexible use across different projects. - Design: parallel glider/rolling ruler format supports controlled movement for repeated, consistent parallel lines. Practical uses - Technical drawing and drafting: lay out parallel guide lines and precise angles for plans and schematics. - Schoolwork and study: speed up geometry tasks and diagram drawing with readable scales and angle markings. - Crafts and pattern work: mark parallel seam lines, curves and layout lines for sewing, model-making or paper crafts. What you’ll get - Two lightweight, transparent parallel glider rulers (30 cm and 15 cm) with clear scales and an integrated protractor to support accurate, repeatable drawing on common drawing surfaces. Simple, reliable, and portable — a practical set for anyone who needs accurate parallel lines, arcs and angles without extra bulk.