Achieve accurate measurements with our precisions steel rule marking block, crafted from high strength metal for superior durability and scratch resistant . This compact metal ruler features an integrated sliding mechanism and locking clamp that securely holds position at your desired measurement point for consistent, accurate markings every time. Ideal for woodworkers, DIYer enthusiasts, and professional craftsmen needing dependable precisions tool for detailed project work. Effortlessly straight cutting lines on lumber, drywalls, or metal sheets in workshops, construction, or home garages. Package includes: 1Set Steel Ruler + Positioning Block or 1Piece Positioning Block