Feature: PRECISION PRECISION - gives you the ultimate marking precision, alowing the user to accurately mark up to the mllimeter. The vermier scale and main scale were designed to slide smoothly into the main body and itwill ft on to objects pertectl. MULTI-FUNCTION (MEASUREMENT AND MARKING) . With one MULTI GAUGE caliper you can do 5 dferent things! From measuring 45 degrees, 90 degrees, depth, width to drawing lines. You can gauge the thickness and depth of the object just like any other vemnier calipers but also you can check the angles with combined miter and t-square. You can mark the object by uilizing the main scale as a ruler. Experience easier measure SOMETHING ABOUT VERSATILITY - MULTI GAUGE measuring tool is absolutely versatile. You can insert a straight ruler and this work as a vernier cliper. cliper comes with additional depth gauge accessory which is perfect for measuring items such as cylindrical rods, pipes and all kinds of angles. This depth gauge is also removable.