The Swanson Speed® Square is one of the few tools whose name is known by contractors and do-it-yourself enthusiasts worldwide! We believe the exacting quality and accuracy of our product has kept the Swanson® name on the minds of our customers for more than 90 years. Some of the recent upgrades included in the Speed® Square are finer gradations for better accuracy, black filled gradations for easier reading, matte finish to prevent glare and most recently the Diamond® cut out. This feature makes layout work and seat cuts on common rafters easy and is one of the exclusive Trade Marks of the Swanson® Tool Company.