Definition
In aviation instrumentation, analogue refers to a display or signal that represents information continuously, typically using a moving needle, pointer, or dial against a graduated scale, rather than as discrete numerical values.
Plain English
An analogue instrument shows information using a moving needle on a dial, like a traditional clock face, instead of showing it as numbers on a screen.
Context Anchor
Seen when comparing traditional round-dial instruments with electronic flight displays, or when an electronic display uses a dial, pointer, tape, or scale to show flight information.
Derivation
From the Greek 'analogos', meaning 'proportionate' or 'corresponding'. The needle's position is proportional to the value being measured — half-scale deflection means half the value. That proportional, continuous relationship is what makes it 'analogue'.
Why Pilots Care
Analogue gauges give a quick visual sense of trend and rate of change — a needle sweeping upward is easier to interpret at a glance than rapidly changing digits. Many pilots scan analogue dials faster than digital readouts during high-workload phases of flight.
Intuition Check
Analogue does not simply mean old, mechanical, or non-electronic. Here it means the information is shown by position or movement on a scale, even if that scale is on a modern screen.
Example Sentence 1
The training aircraft was equipped with analogue instruments, including a traditional airspeed indicator and altimeter with sweeping needles.
Example Sentence 2
Many training aircraft still rely on analogue attitude indicators alongside newer glass cockpit systems.