Professional dental measuring instruments, used in root canal measurement. Very accurate. Autoclavable. The measurement scale is made of plastic and it endures. The scale is clear and the measurement is accurate. Easily measure your working length and accurately set stops on the other. It's the best of both worlds, simplified into durable, autoclavable unit. 135 high temperature and high pressure disinfection, safe to use. Resistant to high temperature and pressure, durable to use. easy to clean and maintain. Product Dimensions 9 x 2.7 x 3.3 cm; 40 Grams Colour Blue Batteries Required? No Item Weight 40 g