Purpose: Designed to measure the height of adult and children above 24 months in vetical position. Accuracy: 0.1 cm. Precision: 0.1 cm. Firm Flat Vertical Surface. Simple and Fast Set-Up, No additional tools are required. No need for calibration as all parts have prefix positions. Width of the Board: 5.5cm Large footplate, providing extra stable base and smoothly gliding measuring slide. No sharp edges or corners. Material: SS All the items are duly approved byconcerned weights and measurment authority.