Extending a thermocouple with ordinary wire causes all sorts of problems because of the dissimilar metal contacts at unknown temperatures. For precision work, special extension cables should be used that are identical to the thermocouple itself.
This is a 26 foot (!) extension cable for type T thermocouples. It is fully shielded and has Conax blue connectors at each end. It is apparently unused mil surplus as NSN 6685-01-133-4305 and the feds paid $70 each for these.
Can also be used as a source of Constantan wire for your own thermal experiments. Outer ~sealed~ package may have storage scuffs or discolorations. Cable itself appears to be very clean and "as new".
You can click here to reach the Conax Website.
Approximate shipping weight: 2 pounds.
Available in quantity.
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