The G. Francis Dual Scale Thermometer Sticker 5-Pack – Liquid Crystal Adhesive Stickers for Bucket, Carboy, Homebrew Fermenter measure 5-1/8” x 3/4" and have a dual Fahrenheit and Celsius scale (39°F-97°F / 4°C-36°C) for homebrew productions and even sauerkraut vegetable fermentation. Place one in your fermentation bucket and one on each carboy, or even inside a wine refrigerator. With the Fahrenheit scale being dominant (larger F scale), it has a simple design and is easy to read. The current temperature is indicated by the colored marking that changes with the temperature. The flexible, water-resistant construction and the strong adhesive backing are great for outside of plastic or glass containers for accurate inside reading. This package includes 5 dual scale thermometer stickers.