The HI 766B2 is a thermocouple probe manufactured by HANNA INSTRUMENTS. This thermocouple probe is designed for measuring surface temperature with high accuracy and response time. With its stainless steel tube, spring sensor, and 1m cable, it offers durability and flexibility. The 130mm stem length and 8mm diameter surface ensure compatibility with various applications. It can measure temperatures up to 900 degrees C and features a spring-loaded design for easy use.