IRWIN Tools Rafter Square, Aluminum, 7-Inch (1794464) N/A Imported Irwin Aluminum Rafter Square 7 In The IRWIN Tools 1794464 Aluminum Rafter Square 7-Inch features a Durable rust- proof aluminum body The rafter square has Permanent deep markings for easy reading and visibility This is manufactured in China This professional tool has permanent deep stampings are durable. The aluminum body is rust-proof and weather-resistant. The square has multiple scales: 1/8-, 1/10-, 1/12-, and 1/16-inch. Can be used as a protractor, saw guide and tri and mitre square, and ruler.