This adjustable thermometer is just the thing to attach to the output side of a wort chiller. I was able to adjust the pump flow to my fermenter to the perfect temperature for pitching. Recommended.

Thermometer works great, is constructed well, and measures accurately.
My only negative is that the fittings are not that tall, and make it difficult to mount on some plate chillers. I have a Duda Diesel chiller, and bought this with hopes to measure the wort out temp. Sadly, because of the height of the water in port adjacent to it, I ended up using this thermometer to measure wort in temp, and had to go with a Blichmann Thrumometer for the wort out.  

I picked this up last month and have used it twice so far.  Instead of attaching to a chiller, I've attached it to the ball valve on my boil kettle.  After my boil, I recirculate the wort using a march pump for whirpool/flameout hops, then chill using an immersion chiller.  This thermometer gives me a dead-on accurate reading of where my temperature is at during cooling so I know when I can kill the chiller and transfer over to my fermentation tank.  Yes, it is a bit bulky coming off of the kettle, but so much easier to read and work with for this type of application than the Blichman ThruMometer.

Yes, the plug can be in line with the end of the thermometer.