Angle steel triangle YATO YT-70780 90° – steel carpenter's square

The YATO YT-70780 90° angle steel triangle is a durable carpenter's square designed for accurate measurement and marking of right angles. Constructed from steel, this tool offers a stable reference edge for woodworking, metalworking and general construction layout tasks. Its rigid form and clear right-angle geometry help ensure precise alignment when checking perpendicularity or transferring lines for cutting and assembly.

Advantages

The steel construction provides strength and long-term dimensional stability under typical jobsite conditions. The 90° geometry is machined to present a straight, true edge for reliable contact against workpieces. Its compact triangular shape allows easy positioning in corners and along edges, while the solid build resists bending during normal use. The tool is simple to use with no moving parts, reducing maintenance needs and ensuring consistent performance.

Suitable for

• Carpentry and joinery marking and layout
• Metal fabrication and sheet metal work
• Construction site layout and fixture installation
• Checking and transferring perpendicular lines for cutting
• Workshop setup and machine alignment tasks

Key specifications

• Angle: 90° right angle
• Material: steel construction for durability
• Shape: triangular carpenter's square for corner and edge contact
• Edge type: straight machined reference edges for accurate marking
• Use: manual, no moving parts

How to use

Place the steel triangle with its two legs firmly against the surfaces that form the corner or along the edge to be checked. Ensure both reference edges sit flush on the workpiece to verify a true 90° relationship. Use a pencil or scribe along the straight edge to transfer the perpendicular line onto the material. For checking alignment, position the triangle inside or outside the corner as required and inspect for gaps or rocking that would indicate deviation from square. Store the tool flat and handle it to avoid dents or bends that could affect accuracy.

Usage recommendations

Regularly inspect the reference edges for nicks, burrs or deformation and keep them clean. Use gentle protection during storage to prevent impacts. When extreme precision is required, verify the square against a calibrated reference before critical layout operations.