Features: Exquisite design: This straight ruler is made of sturdy and durable wooden, these office rulers are designed with both metric and inches, which the ranges of the measurement length are 0-6 inches, 0-8 inches, and 0-12 inches, making it easier to measure and draw straight lines. Various application: these straight rulers can as a perfect gift, suitable for all craft and school related. great for schoolwork or activities that require straight lines, artists, designers, architects,engineers,students, proper for school projects or office supply, each ruler is durable and made for long lasting use. What you : you will 3 pieces straight wooden ruler for Inches and metric to 12 inches, allows for a clear of numbers and letters on the page, non-toxic and hard to scratch your hand,easy to read the scale and can be accurately measured. Specifications: Color: wood color Size: 6inches/15cm, 8inches/20cm, 12 inches/30cm Material: wooden Package Contents: 3PCS single-sided double scale ruler Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.