Accurate and Reliable: Designed for veterinarians, the refractometer measures protein concentration in urine of pet dogs and cats, providing precise and reliable results. Easy to Operate: With a user-friendly design, this refractometer is simple and straightforward to read, making it easy for anyone to use. Compact and Sturdy: With a stylish and compact design, this refractometer is not only beautiful in appearance, but also very sturdy, ensuring long-lasting performance. It is small in size, easy to store and does not take up much space. Automatic Temperature Compensation: This refractometer is equipped with an automatic temperature compensation (ATC) function, which can accurately adjust the measurement value within the temperature range of 10°C-30°C (50°F to 86°F), ensuring accurate readings regardless of environmental conditions. High-quality Materials and Comfortable Grip: Made of high-quality aluminum and rubber materials, this refractometer is lightweight and comfortable to hold. The soft and non-slip rubber pad provides a secure and comfortable grip, making it very easy to use and calibrate.