Description: With this Ruler, you can accurately mark up to the finest millimeter. The vernier scale and main scale were designed to slide smoothly into the main body and it will fit on to objects perfectly. From measuring 45 degrees, 90 degrees, depth, width to drawing lines. You can measure the thickness and depth of an object like any other vernier caliper, but you can also use miter and t-square to check the angle. This caliper comes with an additional depth gauge attachment, which is very suitable for measuring cylindrical rods, pipes and various angles. Made of aluminum with grinding and anodizing treatment, this professional square ruler is durable. Blades are engraved on the scale with white markings on black smooth backgrounds for increased readability! Specification: Material: aluminum alloy Package Includes: 1 Piece Scriber Gauge Note: Please allow slightly measuring deviation due to manual measurement.