Calibration
Calibration ensures accuracy and consistency for measuring tools by comparing against reference calibrating equipment, and then making adjustments as necessary.

Temperature
Temperature sensors are often calibrated to ensure product quality, maintain proper flow or to meet safety requirements.
Temperature Indicators.
Thermocouples.
Thermometers.
Data Loggers.
Pressure
Pressure sensors can be found in instruments such as indicators and controllers and should all be calibrated in order to minimize the probability of erroneous readings.
Process Gages.
Pressure Transducers.
Manometers.
Data Loggers.