The Big Horn Aluminum Professional Dual Function Scriber Gauge is one of the most versatile measuring solutions for professionals of all applications. Constructed of aluminum alloy with a frosted and anodized surface for lightweight, wear resistance, rust-proof, and an accurate layout. This dual function gauge is versatile as it can be inserted as a straight ruler, vernier caliper, T-shaped ruler, and depth gauge to measure all kinds of angles. Equipped with a strong magnet on the back to provide accurate measurements on metal surfaces. Features clear and easy to read laser engraved markings and a scale with a resolution of 0.05 MM for more accurate measurements.