HIGH QUALITY: The ruler is made of stainless steel, practical and durable. GOOD DESIGN: designed with a locking button to lock the angle in any position. BENEFIT: Clear, fast and easy to read measurement. Available in three sizes, meeting your different demands. EASY TO USE: 2 in 1 ruler and protractor for easy measurement. SATISFACTION GUARANTEE: We care about every customers feeling. If this product does not meet or exceed your expectations, please return it for a 100% refund with no questions asked. Features : Made of stainless steel, practical and durable. Designed with a lock nut for locking angle in any position. 2 in 1 ruler and protractor for easy measurement. Quick and easy reading of the measurement with clear display. Available in three sizes, meeting your different demands. Specification : material: stainless steel Measuring range: 0-180 , 0-15cm / 0 -5.91in Optional size: 80 * 120mm Weight: 50-129g Package list: 1 * protractor ruler