Precision Flex Angle & Arc Marking Tool – Adjustable Dual-Purpose Scriber For Metalworking & Engineering

90° Square Tube Arc & Angle Scriber: Dual - Use Parallel Lines & Arcs (M: 20–80mm / L: 20–100mm) This dual - use scriber simplifies the marking of 90° angles, arcs, and parallel lines on square tubes, enhancing workflow efficiency. Specifications: Models: M: Designed for square tubes of 20–80mm (0.79–3.15").  L: Suitable for tubes of 20–100mm (0.79–3.94"), expanded compatibility. Material: Made of stainless steel, it offers rust resistance, durability, and clear laser - engraved markings. Functional Highlights: Arc Marking: Provides both front and reverse lofting arcs for curved cuts. 90° Angles: Allows for precise right - angle scribing for square tube bends. Parallel Lines: Has vertical line cutouts for uniform spacing. Hexagon Holes: Comes with multi - size hexagonal templates for drilling. Usage Scenarios: Suitable for  metal fabrication shops,  plumbing installations, and  DIY metal projects. It streamlines accurate marking for welding, cutting, or assembling square tubes. Operation Method: Model Choice: Select the M model (20–80mm) or the L model (20–100mm) based on the tube size. Tool Alignment: Place the scriber on the square tube and ensure proper alignment. Tube Marking: Use a marker to trace through the tool's cutouts, which can be arcs, 90° angles, vertical lines, or hexagon holes. Operations Performance: Follow the marked lines for bending, cutting, or drilling.