SharpTemp Mercury-Free Veterinary Thermometer with Lanyard. 5” length for Livestock and Large Animals. CONTAINS NO MERCURY: The SharpTemp Mercury-Free Veterinary Thermometer with Lanyard is filled with eco-friendly mercury-free gallium. The thermometer is safe for the environment and safe for use around humans, pets and livestock. Intended for veterinary use only. EASY TO USE & READ: The 5-inch long, oval shape is comfortable to hold. The large-digit scale with black numbers on bright, white background is easy to read. Backside has a handy reference chart with normal temperatures for a variety of animals. Comes with a nylon lanyard to help you hold it securely. FAST & ACCURATE: The SharpTemp Mercury-Free Veterinary Thermometer with Lanyard shakes down quick and provides accurate rectal temps (+/- 0.1 °F) in seconds. Measures temperature in Fahrenheit only. EASY CLEAN-UP & STORAGE: Smooth, waterproof surfaces make for easy clean-up and disinfecting. Hard, plastic case protects thermometer during transport and storage. IN THE BOX: One Sharptemp Mercury-Free Veterinary Thermometer, Nylon Lanyard, Hard Plastic Carry Case. Your satisfaction is 100% guaranteed!