Features: Easily measure an adult and child from home, office or clinic. Very easy to install; Comes with a placeable box to create an outline. Note: This device only has metric measurements (centimeters) and does not measure in feet/inches. Installation Instructions:1. Place the stadiometer on the floor on the wall.2. Pull the ruler far enough so that the zero is exactly aligned with the red bar in the measurement display area. Then mark the location of the drill hole on the wall at the top of the fixing hole.3. Attach the end of the measuring tape to the wall using the screw provided.4. Push the stadiometer back down. Measurement with a stadiometer:1. The person to be measured is standing under the stadiometer.2. The measuring tongue is lowered on the head.3. The height appears in the measurement display area. Specifications: Material: ABS + Metal Color: Black Range: 0-200cm (Metric Only-No Feet/Inch) Graduation: 1mm Quantity: 1 PcNote: Please allow 1-3mm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Contents:1 x Stadiometer2 x Screws