Keep a close eye on the temperature as you process preserves or make candy. This easy-to-read thermometer clamps onto the side of your pan and indicates the optimum temperatures for caramel, toffee, butterscotch, jam and more. Measures temperatures from 100deg.F to 400deg.F (40deg.C to 200deg.C). Stainless steel. Clips onto side of pan, keeping hands away from heat. Designed by an English company that's been in business since 1730. 3 3/4" x 14 1/2" long.