Durable Carpenter Square for All Conditions Built from thickened aluminum alloy for a sturdy, durable 12 inch carpenter's rafter square. Resists oxidation and rust, waterproof, and suitable for harsh environments without compromising quality. Compact and portable at 12 inches, easily fitting into a tool belt, pouch, or carry case. Precision LaserEtched Markings Scale is laseretched to provide clear, accurate measurements that won't fade or rub off with frequent use. Maintains precise readings for all measuring and marking tasks, combining accuracy with practicality. Versatile Angle Measurement and Easy Line Drawing The 12 inch metal ruler supports multiangle measurements for versatile layout work. Draw straight lines at 15°, 25°, and 45° with ease, ideal for a wide range of woodworking tasks. Widened base at the bottom can be clamped onto wood and slid back and forth for repeated line work. Enhanced Stability and Precise HoleBased Marking The widened base can be securely clamped onto wooden boards and moved smoothly for stable operation. Marking holes at every integer position along the square enable fast, accurate line drawing and layout. Use scenarios Framing and rafter layout on lumber: clamp the square to the board, use the 15°, 25°, or 45° marks to establish precise angle cuts, and draw lines quickly for cutting templates. Cabinetmaking and furniture joinery: lay out accurate bevels and joints with laseretched scales, then clamp and slide for repeated markings without slipping. General onsite marking and alignment: clamp the square for straight guides across panels, mark multiple reference lines at consistent intervals, or use the hole marks for quick, repeatable layouts.