①. Features: The measuring ruler is light weight, wear-resistant, and high hardness. ②. The ruler corrects the height of the net according to the international table tennis federation general height 15.25cm. ③. The 4mm fold helps judges measure the thickness of the colloidal sheet. ④. The ruler can also help to draw the hand position line when patting the rubber. ⑤. Suitable for home practice, school tournaments, or club, effortlessly adapts to any table tennis playing surfaced. ⑥. Specifications: Component: Plastic ⑦. Size: about 20cm/7.87' ⑧. Package Includes: 1 Pc Table Tennis Umpire Ruler ⑨. note: Please allow 1-3cm errors due to manual measurement. ⑩. Due to the difference betweeen different monitors,the picture may not reflect the actual color of the item.