Stanley 46-123 12-Inch Contractor Grade Combination Square Contractor grade combination square with a square for English measurements, a level vial, and a scratch awl Precision-machined working surfaces for improved accuracy; deeply etched blades for long-term readability Hard chrome-plated blades coated for rust resistance; durable die-cast metal handle with brass hardware Includes easy-to-read level vial; built-in scriber for convenient surface marking Length: 12 inches; backed by lifetime limited warranty