Plain English Meaning
The older round-dial instruments with moving needles that show the same flight information now shown on a digital screen.
Full Definition
The traditional mechanical flight instruments — such as the airspeed indicator, attitude indicator, altimeter, heading indicator, turn coordinator, and vertical speed indicator — that perform the same functions as the digital displays on an Electronic Flight Display (EFD). In glass-cockpit discussions, 'analogue counterparts' refers to the older needle-and-dial instruments that each EFD presentation replaces or mirrors.
Context Anchor
Seen when comparing electronic flight displays with the older round-dial cockpit instruments they replaced or duplicate.