Fieldpiece ATH4 Accessory Head for Dual Temperature is designed to concurrently measure two temperatures using the two included K-Type thermocouples. The Fieldpiece ATH4 features display of T1, T2, and T1-T2 in Fahrenheit or Celsius, innovative wrapping tabs for storage, ±1°F measurement accuracy, and 0.1°F resolution and 0.1 mVDC DMM resolution.