T-square Stanley STHT1-05894 122 cm Metal Yellow

The Stanley T-Square STHT1-05894 122 cm Metal Yellow is a precision framing and marking tool designed for carpentry, construction and workshop use. Constructed from durable metal with a 122 cm square blade, this T-square provides a straight reference edge for marking, cutting and aligning materials. Its bright yellow finish improves visibility on busy work sites and in low-light conditions, while the rigid body helps maintain accuracy over repeated use.

Advantages

The metal construction delivers stability and long-term dimensional accuracy compared with cheaper plastic alternatives. The long 122 cm blade supports full-length marking on large panels, sheet goods and framing members without having to reposition the tool. The high-contrast yellow surface makes scales and edges easier to see, reducing marking errors and speeding up layout tasks. The straight edge is suitable for use with pencils, knives and marking pens, and the T-shaped head ensures consistent 90° alignment.

Suitable for

Key specifications

How to use

Place the T-square head firmly against an established reference edge or the end of a workpiece to ensure the blade is square to the surface. Hold the head steady with one hand while running a pencil, marking knife or pen along the long blade to transfer a straight, accurate line. For cutting, use the T-square as a guide for a saw or utility knife, keeping even pressure against the head to maintain alignment. When working with large panels, move the square only when necessary and re-establish the reference at each repositioning to preserve accuracy.

Recommendations

Store the T-square flat or hanging by the head to avoid bending the blade. Clean off adhesives, paint or debris after use to maintain a true edge. For the most accurate layout, verify the square against a known reference before critical cuts or installations.