internal external gem

Review by David on 1/24/2014

popped this into my cooler mash tun recently. good instructions included. no leaks. so nice to view the internal temperature at an external glance. very satisfied.

pros and cons

Review by Rob on 1/2/2014

PROS: Easy to install, doesn't leak, and pretty accurate once calibrated. CONS: Doesn't indicate up to 212F, so cannot calibrate using boiling water. Must use a reference thermometer. Doesn't have calibration screw on the back of the dial, but rather you move the face relative to a nut at the base of the stem; problem is it's easy to knock out of cal when you install (as I did). You can avoid this by gripping only by the nut at the base of the stem, except you must have a very thin 11mm wrench to access, as there's only 1/8" space between cooler wall and dial; a typical thickness wrench like from Home Depot won't work. Having thin wrench is also critical to calibrating once installed. A suitable wrench should be included, as I'm have to spen $20 more mailordering one now.

Update of Original Post on 11 / 4 / 13

Review by Paul on 11/7/2013

Just got the rest of my gear and was able to finally install this sweet little Thermo and noticed 1 small issue with it. when I initally drilled the 5/16" hole in my 10 gal Rubbermaid, I was apparently a little off and drilled the hole ever so slightly out of square.... mabey only 1 - 2 deg. but it was enough to cause the O-ring not to completely seat aginst the wall of the cooler and cause a leak...not large mind you, only 1.5 oz. an hour. The fix was simple enough though. I just ran the very end of the bit (about only 1/4")into the outside of the hole and slotted it ever so slightly downwards as to bring the outter hole square with the interior hole. Installed the thermo again, filled the cooler back up to 10 gallons, and its been sitting 2 hours now and no leaks. Definately going to get another one when I get my HLY cooler. Just BE SURE that when you drill your hole, it's SQUARE w/ the cooler.... not chanted or at an angled.

Great little Mashtun Thermom

Review by Scott on 11/4/2013

Ordered this last Friday, 1/11 and got it today, 11/4. While I haven't installed it into my MT yet, I did test it out for its accuracy with my large glass/alcohol test thermometer and I must say I was surprised. I honestly was expecting it to need a little "fine tuning" but this thing was spot on perfect. This is going to be an excellent addition to my MT and I cant wait to put it to use. I'm using a 42 qt pot for my HLT with a Blichmann Brewmometer, but this has me seriously considering getting another 10 gal cooler set-up w/ another one of these thermometers to hold heat in better. Great products and great service @ William's.

Love it!

Review by Sal on 8/15/2013

This thing is awesome, I don't like opening my cooler to see what's going on in there. Protip: Took me a couple mashes to figure out, but the thermometer does create a cooler pocket of mash around the temp probe, so it will appear that your temp is dropping. Just shake your cooler around so the mash gets stirred up and it'll be accurate again.