Dry block calibrators are precision instruments used for temperature calibration. They operate by heating or cooling a solid metal block to a specific temperature, providing a stable and uniform temperature environment for testing temperature sensors and thermometers.

Key features include:

Versatility: They can heat and cool, accommodating various temperature ranges.
Precision: They ensure accurate calibration without the mess of liquid baths.
Design: Typically, they have pre-drilled holes for inserting sensors, allowing for multiple devices to be calibrated simultaneously.