- STAINLESS STEEL CONSTRUCTION: This multi-functional combination square uses robust stainless steel with an aluminium alloy corner base for stability and rust resistance. The ruler is 5 mm thick and the angle base 18 mm thick, delivering durable performance for long-term use in various measuring tasks. - ACCURATE MEASUREMENT CAPABILITY: Achieve precise markings with the scale groove design that lets you slide the scale block to your required measurement and secure it with the tightening screw, ensuring consistent accuracy for professional-quality results. - VERSATILE FUNCTIONALITY: Converts any steel ruler into a precise marking tool. Available in 300 mm, 400 mm, or 600 mm lengths, it is suitable for marking, staking out joinery, and accurate measurements across woodworking tasks. - USER-FRIENDLY DESIGN: Lightweight and compact for easy storage and transport. With a 30 mm wide ruler body and a simple operation mechanism, this combination square offers convenience and efficiency for both DIY enthusiasts and professional craftsmen. - USE SCENARIOS: Mark straight layout lines on plywood or boards; stake out hinge or mortise placements on cabinets or frames; transfer measurements from a ruler to a workpiece for marking cut lines or drill locations.