Reading ruler with anti-slip function that stops when pressed down. Straight ruler; 0.2 inch (5 mm) block scale; Scale from end to side; Methacrylic resin (transparent); Standard: 5.9 inches (15 cm); External dimensions: L 6.3 inches (160 cm) x W 1.4 inches (35 mm) x Thickness 0.08 inches (2 mm); Material: Methacrylic resin.