The Trend 3″ Dial 9″ Probe 1/2NPT Thermometer (model 54) is a precision instrument designed for measuring temperatures ranging from -50 to 50°C. With a dial size of 5 inches and a probe length of 6 inches, this thermometer is ideal for various industrial and business applications. The 1/2 inch NPT thread type ensures a secure fitting for accurate readings. The TREND brand is known for its quality and reliability, making this thermometer a trusted choice for measuring temperature in a variety of settings.