# Tool Calibration

Tool calibration is used to control how well a tool corresponds to a reference transducer.

The calibration value stored in the tool memory is used to adjust the torque value given by the tool’s torque transducer so that the correct torque value is displayed on the controller. The controller displays the date when the tool was last calibrated.

Calibration parameters
Field | Description
--- | ---
Last calibrated | Date and time when last calibration was performed.
Calibration value | Torque value to calibrate against.
Next calibration date | Date when the next calibration of this tool is needed.

In this Section

- Preparing the Calibration
- Calibrating the Tool
- QA Calibration
- Calibrating a Tool Through the STa6000 or STpad