Safe temperature to set my heat mat to if I don't have an infrared thermometer?

[Zincubus]

I previously did this and received readings all over the place, some of he readings were exactly 32f, but most were higher or lower by a couple or so degrees.

I ended up sending the temp gun back, it'll be a week or two until my next temp gun arrives.

What was the distance from temp gun to the target area ?


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