Features: 5" Large disc with bold numbers,large metal wall thermometer with hygrometer. with the 5" diameter disc display,easy to read the temperature and humidity value from distance. / double scale round thermometer with wide measurement range,our double scale thermometer accuracy is between -20 to 120/- 30 to 50 to suit most kind of climates. for extra hygrometer could measure ambient humidity from 10-100, indoors or outdoors, including greenhouses, warehouse,offices,laboratories,museum,balconies, garden, patio, etc. Environmental for protection,this wall thermometer implementing concept of green which without batteries, energy saving, environmental for protection. it use different bending degrees of temperature sensitive metals in different temperature environment to realize the display of temperature. Calibrate automatically,the thermometer will calibrate automatically, just place it at a fixed location. after 2 hours, the pointer will match the local temperature automatically. please feel free to contact us if any questions or defective issue about our thermometer. Exquisite design, the outdoor thermometer/hygrometer with hangs hook,can display or hangs,metal discdesigned to show more elegance. large instrument display for easy reading from a distance. Specifications: Material:Metal Color:Rose Gold,Silver Note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: Wall Thermometer