I have one from sears and I use it for everything, I work on diesel motors and it is great for finding which injector is not firing, thermostat is working and what temp, so I put it to use with my candles and found out my candy thermometer can be off as much as 15 degrees depending on the amount of wax I have in the pot. I melt 1 pound to 4 pounds so thermometer may not get a good reading, so I started to use the infared ther., works great. Paul