☪-Dual plate,for Celsius and for your different needs ☪-Metal materials and high intensity and heavy-duty ☪-Great for home brewing and distilling ☪-Tuning and Zeroing screw on back, 1/2" NPT threaded back. -10 100 Celsius and 0 220 Accuracy of +/- 1% ☪-Multi-functional,as water thermometer,for various materials of liquid temperature measurement. thermometer only,other accessories demo in the picture are not included, Manufacturer: SkyPOOU