Steel Carpenter's Square Koelner MN-83-010 130×250 mm

Koelner MN-83-010 130×250 mm is a steel carpenter's square designed for marking and checking right angles in workshop and on-site environments. With a rigid steel construction and compact footprint, this square is intended for carpentry, metalworking and general DIY tasks that require accurate 90° layout, edge alignment and short-distance measurement. The dimensions 130×250 mm make it suitable for small to medium workpieces where a precise reference edge and corner are needed.

Advantages

The steel body provides stable, wear-resistant edges that maintain squareness during repeated use. Its compact dimensions allow easy handling and positioning on workpieces, while the solid construction resists bending and twisting under typical workshop loads. The clear right-angle geometry simplifies transfer of 90° lines and checking of corner alignment without relying on electronic tools.

Suitable for

• Layout and marking of 90° lines on wood and metal
• Checking squareness of assembled frames and corners
• Edge alignment and short-distance measurement in workshop tasks
• DIY and renovation projects requiring a durable reference square

Key specifications

• Material: steel construction for rigidity and wear resistance
• Overall dimensions: 130 × 250 mm for compact layout work
• Angle: fixed 90° right-angle geometry for marking and checking
• Finish: machined or stamped edges suitable for accurate marking
• Use environment: workshop and on-site applications

How to use

Place the shorter arm of the square firmly against the reference edge of the workpiece so the longer arm lies across the surface where the line is required. Use a pencil, scribe or marking knife along the longer arm to transfer a precise 90° line. To check squareness of assembled parts, position the square in the internal or external corner and observe contact along both arms; any gap indicates misalignment. For measurement, use the visible edges to align with measuring scales or to mark repeatable distances directly from the square.

Usage recommendations

Keep the square clean and free of chips or burrs on the edges to preserve marking accuracy. Store flat or hung to avoid deformation. If used on finished surfaces, place a thin protective layer between the square and the material to prevent scratches. Periodically verify squareness by comparing against a known straight reference.