Dual-scale thermometer has a U-shaped capillary mounted in a plastic 4.72" x 3.62" x 0.98" (120mm x 92mm x 25mm) with guard and mounting tab. The black pointer shows the current temperature. If the temperature rises, the red pointer will be pushed to the right and will register the maximum temperature. As the temperature falls, the blue pointer will be pushed to the left and will register the minimum temperature. • Ranges: -58°F to 122°F in 1°F div. and -50°C to 50°C in 1°C div.