"Make sure your truck is DOT compliant with the 15' Telescopic Load Measuring Stick with Storage Case. Quickly and easily check the overall height of your vehicle and cargo make sure it's under 13' 6"" by extending this convenient, folding measuring stick. With a maximum height of 15' and a 4' cross arm, this measuring stick is marked with both standard and metric units and is sure to give you an accurate measurement every time."