Review on 📐 Drafting Architect - Mr. Pen: Architectural Test, Measurement, and Inspection by Steven Harmon

This is a solid, well made, all metal tee. The markings and measurements are clear and I like to measure along the top crossbar. A surprising downside, unlike more traditional T-square styles, is that there is no ridge or protrusion to attach a crossbar to your work for secure alignment. The two parts of the T are perfectly even and flat, so you need to line it up by eye and make sure you don't move it. this "feature" when I used it often for precise work.