Adjust the crossbar to the best angle (90° is recommended to keep it on the same horizontal line as the measured object), align the scale lines between the two sections, and the positioning pin will automatically pop out and fix. Product advantages Accurate measurements, Easy to read Load Height Measuring Stick - 6' to 20' - Mytee Products Pushrod Length Checker VEVOR Load Height Measuring Stick, 20' Sturdy Fiberglass Truck Height Meter Stick 51381-SL4-013 - Genuine Honda Parts This precise measurement is critical in preventing accidents associated with overheight vehicles. 📏Super Stable: This 20 ft truck measuring stick weighs only about 4.52 LBS, lightweight for you to hold without much effort, and is designed with a large non-slip rubber pad to offer excellent stability. 📏Convenient Storage: Our measuring stick for truck drivers and car haulers can be folded no more than 56 inches, and it comes with a durable storage bag for you to carry it around and store it with convenience. The height of the folded ruler is only 57.8 feet (about 147 cm). Non-conductive for safer use 📏Easy to Read: 20FT Load Height Measuring Stick features black letter printing with large metric markings to ensure maximum readability. The number displayed on it is the value of the height of the object you want to measure. The load height measuring stick can be extended to a maximum width of 4 feet (12.2 meters) and can be used to measure the height of mobile homes, floors and sheds, with a wide range of applications. High quality fiberglass material, Stable & Long-lasting use Metric Easy to Read The 20ft truck height measuring stick features both imperial and metric dual measurements, accurate to 1 cm or 1 inch, providing precise measurement accuracy. How to Use Unscrew the adjustment button, tighten the hook on the metal head of the thinner section inside the height ruler, and then pull it out section by section. When you are done using it, it can be folded and stored. Victoam 20 FT Load Height Measuring Stick This Height stick for semi trucks is made of lightweight, sturdy fiberglass, non-conductive, safe to use and durable; it features both imperial and metric dual scales for precise measurements; it is easy to use and can accurately measure the height of the load in just four simple steps. The joint between the two sections should be stretched into place. Keep your eyes level with the rod mouth at the top of the bottom rod outside the height ruler. VEVOR Load Height Measuring Stick, 20' Sturdy Fiberglass Truck Height... The orange background enhances visibility, ensuring high readability. 📏Strong Fiberglass body: To make sure the measuring stick is durable and safer to use, we made it from non-conductive, lightweight, but sturdy glass fiber and reinforced the top metal frame with both glue and mechanical methods.