General description Our Floating Water Thermometer features a fun cartoon pineapple design and is perfect for measuring the temperature of pool water, spas, hot tubs, and aquariums. It is made from aviation aluminum, ensuring it is safe, nontoxic, and mercury-free. Technical specifications Temperature measurement range: -10-50°C (20-120°F) or 0-50°C (30-120°F) Measurement error: ±1°C Other information Portable and lightweight design for easy carrying