Starrett 470 Short Stair Gage Fixture Attachments are specifically designed for use with framing squares. This fixture attachment is a must-have tool for laying out stair stingers, hip, valley, and other rafter cuts plus many unusual cuts. It has a smaller area that contacts the square blade. These fixtures have great convenience and ease of use at a lower cost than standard fixture attachments. The Starrett 470 Short Stair Gage Fixture Attachments will help you get more done on the job site quickly and easily.