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

It doesn't have a little bar you can slide right along the edge so the pressure can hold the edge of the table and what you're measuring. If you're looking at a regular character square, this is what I wanted. Otherwise this is a good ruler. It is durable and the measurements are very easy to read. It has both metric and imperial systems.