The dual-channel Fluke 52 has all the capabilities of the Fluke 51, plus additional measurement functions and high-performance features. With its dual thermocouple inputs (T1 and T2), the Fluke 52 can calculate and display the temperature difference between two different sources (DIFFERENTIAL Mode) - ideal for measuring input-output temperature changes, and trend information. Other features include SCAN Mode, a unique feature for continuous scanning through a measurement sequence, (T1, T2,), (T1 -T2); and MIN/MAX RECORD, allowing minimum and maximum temperatures from any one of its three channels (T1, T2, or T1 -T2) at one time; and user-selected resolution. Features User selectable °C or °F 1°C or 0.1°C (1°F or 0.2°F) resolution - internal jumper Accepts J- or K-Type Thermocouples Wide variety of interchangeable thermocouple probes available READ Hold Self test Single Thermocouple Input (Fluke 51 only) Dual Thermocouple Input (Fluke 52 only) Differential Temperature (T1 -T2) (Fluke 52 only) SCAN Function (T1, T2, T1 -T2, . . .) (Fluke 52 only) MIN/MAX Record (Fluke 52 only) Push Button Selectable Resolution