Conant T19LFB Vermont Desk Thermometer, Brass Shows the Fahrenheit scale on one side and Celsius on the other Solid Brass & polycarbonate construction Living Finish Brass wont peel, flake or rust; patinas with age This small brass thermometer sits on a desk, shelf or window sill Temperature range: -30F to 120F (-35C to 50 C) Dimensions - Diameter: 3/4 inch (19.05mm); Length: 2 3/4 inch (70mm) & Base: 1inch (25.4mm) Lifetime warranty