This Johnson combination square is a must-have for any DIY enthusiast or professional tradesperson. Measuring 12 inches in length, this square is perfect for measuring and layout tasks in a variety of materials, including metal. Its durable construction ensures that it will last for many years to come, and its brand name is synonymous with quality and reliability. Whether you're working on a home improvement project or a construction site, this square is sure to be a valuable addition to your tool collection.