To bring the thermocouple wires are inside the specimen outside. You should not use the line passed close to a heat source to affect the test (the result may not be using the actual value).
Bringing thermocouple wires inside work outward. Do not put the call through close to the heat source. It will affect the test. (Results may not be the actual value).
The line thermocouple inside workpiece outside. Should not take calls through close, because will affect heat source test. (it may not use the actual value).