One advantage of electrical and electronic fuel quantity indicating systems is that:

The advantage of electrical and electronic fuel quantity indicating systems being able to read several fuel tank levels on one indicator is significant because it enhances the efficiency and functionality of monitoring fuel levels in an aircraft. This allows for a more streamlined cockpit display, reducing the number of gauges and indicators a pilot must monitor.

By integrating multiple fuel tank readings into a single indicator, the system simplifies the pilot's task of keeping track of fuel levels across various tanks, which is especially important in larger aircraft with multiple fuel storage compartments. It also minimizes the potential for confusion or error, as having one consolidated reading helps ensure that the operator has a clear understanding of the aircraft’s overall fuel status.

This approach is more efficient in terms of weight and space, which are critical considerations in aircraft design. Additionally, electronic systems can often provide more accurate and real-time data compared to mechanical systems, which further enhances safety and operational effectiveness.