What component is typically adjusted to account for meter calibration errors?

The adjustment for meter calibration errors is commonly made using the coarse knob. This component plays a key role in calibrating the meter to ensure it provides accurate readings. The coarse knob allows for a significant adjustment, which is necessary when there are notable discrepancies in the meter's performance. Proper calibration is essential in water and fuel systems to maintain the integrity of measurements, ensuring that systems operate efficiently and accurately.

While the fine knob is also used for calibration, it typically serves to make smaller, more precise adjustments once the coarse adjustments have been made. The pressure gauge and liquid level sensor, while important components in water and fuel systems, do not directly facilitate the adjustment of meter calibration errors. Thus, they are not the correct choice for this particular scenario.