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 straight cutting lines on lumber, drywalls, or metal sheets in workshops, construction, or home garages Ideal for woodworkers, DIYer enthusiasts, and professional craftsmen needing dependable precisions tool for detailed project work Achieve accurate measurements with our precisions steel rule marking block, crafted from high strength metal for superior durability and effortless measuring and marking with clearly 0.1mm graduation markings and the sliding function on this essential steel rule accessory, Manufacturer: Fcnjsao