Features: 1Easy to Use: Just move the ruler to the required scale and lock the screws, which is convenient and efficient to use. 2Accurate Positioning: Designed for 29mm steel rules to ensure accuracy. The operation is simple and convenient. 3Ruler Stops Fences: Parallel lines can be easily drawn, and the use efficiency is high. Easy to lock. 4Carbon Steel Material: Made of carbon steel material, rust proof, sturdy, has a long service life, and has more refined appearance. 5Scope of Application: Positioning block is suitable for engineers, craftsmen, model manufacturers, etc. Specification: Item Type: Ruler Stops Fences Material: Carbon SteelWeight: Approx. 39g / 1.4ozSuitable: for 29mm / 1.1in Steel Ruler Package List: 1 x Ruler Stops Fences