This thermometer is perfect for classroom presentation, it is large and easy to read. The temperature is displays in Fahrenheit and Celsius, perfect for a variety of classroom temperature exercises. This thermometer even notes the freezing point of water. This oversized (15") thermometer features a large, accurate 12" glass magnifying tube. Range: -40° to 50° C and -40° to 120° F. Ideal for all grades. Pack of 3 thermometers.