Description:  2M  Home Office Use Adult Children Ruler Height Measuring Measurement Tape.     Features:  Easily measure adults and children from home, office, or clinic.  Very easy to install; comes with a placement box to create an outline.  Note: this unit only has metric measurements(centimeters) and does not measure in feet/inches.     Installation instructions:   1. Place the stadiometer on the floor against the wall.  2. Pull the tape measure up far enough for the zero to line up exactly with the red stripe in the measurement display area. Then mark the site of the drill hole on the wall on the upper part of the attachment hole.  3. Attach the end of the tape measure to the wall using the screw supplied.  4. Push the stadiometer back together.  Measuring with the Stadiometer:  1. The person to be measured stands under the stadiometer.  2. The measuring tongue is lowered onto the head.   3. Height appears in the measurement display area.     Specification:  Material: ABS+Metal;  Color: Black or White (optional);  Size: (About)2.5*17.2*3.5CM;  Range: 0-200cm (Metric Only - Not Feet/Inches);  Graduation: 1 mm;  Quantity: 1pc;     Note:   Transition: 1cm = 10mm = 0.39inch;  Please allow 1-3mm error due to manual measurement. Pls, make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.    Package included:  1 x Stadiometer.