As far as the original post calling them the same, the Harbor Freight temp gun measures up to 230°f where the Duratrax measures up to 428°f. The HF one is fine for those running electric only, but not sufficient for nitro. I own several of the HF ones so this isn't a slam against it, along with several other brands and a pricey pistol style laser one and use them all from time to time. Just wanted to clarify that just because they look the same, the specs listed are quite different. For ten bucks, nice to have one or more in the pit box.