A thermocouple is made by the joining together of two dissimilar metal conductors. When the temperature changes at the joint between the two conductors, a voltage is generated. By transmitting that voltage to a special meter, those temperature changes may be monitored and, if desired, recorded. This process is most useful in process instrumentation where monitoring is essential. Solid or stranded alloy wire matched and calibrated to standard limits of error per ASA C96.1.