This is the NIST-certified version of REED's R2900 dry block calibrator, covering the same 91 to 572F (33 to 300C) range for calibrating RTDs, thermocouples, and bimetal thermometers via an interchangeable multi-bore insert block. It ships with a NIST-traceable calibration certificate showing measured data and uncertainty values, giving buyers documented proof of accuracy for audit or quality-system requirements. The dual display shows set and actual temperature simultaneously for straightforward monitoring during a calibration run.