A quality 12" glass thermometer, ideal for ensuring you have the correct temperature for mashing and sparging if making full grain beers and for checking the temperature of the beer or wine before adding the yeast to start fermentation.
This thermometer has a twin temperature scale.
+20º to +230º F
-10º to +110º C
These thermometers are not designed to be used as "precision equipment" and very occasionally may provide incorrect readings. We would recommend that you complete a "calibration test" to see if they are reading accurately and make any necessary adjustments to the displayed temperature before relying absolutely on them when assessing mashing or pitching temperatures.