Multi-functional PCB ruler available in lengths 15 cm, 20 cm and 25 cm (about 5.91 in, 7.87 in and 9.84 in). Intended for computer and electronics work, rated for operation in a temperature range of approximately -20 °C to 65 °C (about -4 °F to 149 °F). Customizable options available. Brand - diymore.