1. Specifications: Stainless Steel Ruler: Length 33Cm, Width 2.7Cm + Brass Stopper.2. Easy To Use: The Brass Positioning Block Can Be Placed In The Desired Location, Just Tighten The Easy-To-Use Screws. Can Be Used With All Types Of Steel Rulers. Using A Steel Ruler, All Measurements Can Be Made With High Precision In The Measuring Range Of 0-30 Cm.3. Dual Scales - Woodworking Marking Tools Are Marked With 2 Different Scales On The Front And Centimeters And Inches On The Back To Meet Different Measurement Standards.4.Material: The Office Ruler Is Made Of Durable, Unbendable Stainless Steel, But With A Little Bit Of Elasticity For Durability, The Markers Are Embedded In The Metal So They Won'T Wear Out Over Time.5. Perfect Combination: Woodworking Scale, Positioning Block, Parallel Ruler, Stainless Steel Ruler, Brass Stopper. You Can Save A Lot Of Time Simply By Transferring The Measured Values. Highest Precision.