Complete with colour-coded temperature zones so you can easily see if you are in the correct temperature range and a re-calibration adjustment screw. The display is in both degrees Celsius and Fahrenheit. 8cm diameter face. Measuring range: 0~300℃, 0~550°F. Bimetal thermometers have the advantages of no mercury damage, easy reading, firmness and vibration resistance, etc. They can replace industrial glass mercury thermometers and are widely used in industrial and scientific research departments.