Model: CDN - $17
I sell kits with bimetal dial thermometers because people like to install them, but I always recommend to spot check your temps with a more accurate, quick reading digital thermometer like this one prior to walking away from a mash. I've tried half a dozen instant read thermometers and this is by far my favorite. Waterproof, Recalibratable, 5 year warranty, and under 20 bucks! As of April 2012, these units have an improved narrow tip that reads even faster.
DTQ450X – PROACCURATE® QUICK-READ® THERMOMETER Features
Instrument Range: -40 to +450°F/-40 to +230°C
- NSF® approved
- 6-8 second response
- 5" stem
- Big digit
- Stainless steel housing
- On/off button
- Auto-off after 10 minutes
- Temperature guide on sheath
- Pocket clip
- 1.5V Button IEC LR44 Alkaline
The user instructions are on the packaging but just in case you throw that away, here's a copy of the manul.
For some interesting ways to use this thermometer in your brewery, check out the fittings page.
If you'd like to install this thermometer into one of your brewing vessels or inline with your pump/chiller plumbing, check out these fittings here.
Test results as compared to the $89 Thermapen and the CDN DTTC. (click image for full size):