The large color display on the CTC is easy-to-read and provides icons and information regarding the status of the calibrator and the calibration in process. Popular functions like automatic switch test and auto stepping are available with special one-key-one-function buttons. Speed, portability, cleanliness, and wide temperature range are all superior over liquid bath systems. Ametek CTC Highlights Dry Block Calibrator Accuracy to ± 0.2°C and Stability to ± 0.04°C Lightweight and easy to carry Input for external reference sensor on all C models MVI circuitry ensures stability despite mains supply variations 28°C to 350°C No Inserts NIST Certificate