I was fortunate to receive a Cocktail Kingdom Thermometer Spoon for Christmas. Sadly out of the box its temperature did not match that of my Thermapen. I emailed in and Cocktail Kingdom advised, “The nut on the bottom of the thermometer adjusts the dials placement.” I tried that but still couldn’t get the thermometer to consistently match my Thermapen over a wide range of temps.
I think the thermometer spoon is a good idea in theory but in practice it didn’t live up to my expectations so I sent it back.