What is the purpose of electronic fuel gauges compared to mechanical gauges?

Electronic fuel gauges are designed to offer improved accuracy compared to mechanical gauges. This greater accuracy is a result of their reliance on electronic sensors and digital displays, which can provide precise readings of fuel levels. In contrast, mechanical gauges typically use float mechanisms or similar systems that can be affected by factors such as turbulence, fuel agitation, and the design of the tank. These factors can lead to less consistent readings, especially in dynamic environments like an aircraft.

While electronic fuel gauges may involve higher installation costs and require a power source, their superior accuracy makes them a preferred option for modern aircraft, where reliable fuel level monitoring is critical for safety and operational efficiency.