Which component of a multimeter is used to select the measuring function?

The component of a multimeter used to select the measuring function is the selector switch. This switch allows the user to choose the specific function they wish to measure, such as voltage, current, or resistance. Each position on the selector switch corresponds to a different measurement mode, enabling the multimeter to operate optimally for the intended task. By switching functions, users can accurately diagnose and troubleshoot electrical circuits by obtaining the necessary readings needed for their work.

The other components, while essential for the multimeter's overall operation, do not serve this specific purpose. The display panel shows the readings being measured, the probe is a tool for connecting to the circuit under test, and the calibration knob is used for adjusting the accuracy of the measurements.