If something is done metronomically, it is done with a regular and steady rhythm, like the ticking of a metronome.
Doing something metronomically can make people think of music, practice, and precision.
Examples:
She brushed her teeth metronomically, up and down, up and down.
The robot moved metronomically, back and forth, back and forth.
He ran metronomically, left foot, right foot, left foot, right foot.
The cat purred metronomically, like a little engine.
The clock ticked metronomically, never stopping, never slowing.
The dancers moved metronomically, perfectly in time with the music.