The REED R2900 is a benchtop dry block calibrator spanning 91 to 572F (33 to 300C), built for verifying RTDs, thermocouples, and bimetal thermometers. It uses an interchangeable insert block with multiple bore sizes to accommodate different probe diameters, and a dual display lets the operator watch set-point and actual block temperature side by side. Typical uses include HVAC, food-safety, and manufacturing environments where sensor accuracy needs periodic field verification.