The REED R2810-NIST is a handheld thermocouple calibrator that can both source and measure eight thermocouple types (R, S, B, E, K, J, T, N) plus millivolt signals, making it suited for checking meters, controllers, transmitters and data loggers. It offers built-in cold-junction compensation, a large easy-to-read display, and a basic accuracy around 0.05%, with a quick-zero button and auto power-off to extend battery life. The kit ships with test leads, alligator clips, a thermocouple adapter and a protective holster, and this unit is supplied with a NIST-traceable calibration certificate for verified accuracy.