The men tend to have a particular style of untrimmed beard often considered a visual indicator.

They also have signed heaps, which are visual indicators of an otter's presence.

OK, not entirely accurate, but an effective visual indicator!

I have always relied on it as a visual indicator that my film was passing through the camera.

A light for the retractable tailwheel was mounted on the instrument panel, just below the main visual indicator.

This mechanic provided a visual indicator of how powerful the player character was becoming.

Around the circumference of the dial, red lights at each degree provide a visual indicator to the rider and test personnel.

Instead, it serves as a visual indicator of how much time is remaining.

There were many reliable visual indicators of a thriving community.