Used Fluke 1524 Dual Channel Digital Reference Thermometer, Type K, USA ...

Thermocouple Thermometer Digital Temperature Meter, Dual Channel Gauge -328~2500

Dual Channel K Type Digital Thermocouple Thermometer 6802 II, + Pipe Clamp, HVAC

Digital Thermocouple Thermometer Dual-Channel With Two K-type Temperature Meter

GM1312 Digital Dual Channel Thermometer with 2 K-Type Thermocouple Sensor Tester

Handheld Digital Dual Channels Thermometer K-Type Thermocouple Sensor Tester

Thermocouple Thermometer Digital K Type HVAC Thermometer Dual Temperature Meter

6802 II Dual Channel K Type Digital Thermocouple Thermometer Measurement Gauge