I like the oven idea, but who has an oven that allows you to read the temp in accurate degrees? Also the bulb of the thermomiter may heat at a different rate than the wire.
Here is my suggestion. Melt some solder. Cast a thermoniter bulb into the melted solder so that the bulb is fully covered but none of the rest of the thermomiter is covered. Let the solder solidify, then hold the thermomiter bulb/solder unit buy the thermomiter so that it is hanging straight sown by the thermomiter. Then heat the solder with a torch and when the casting falls off the thermomiter read the temp on the thermomiter.
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