A hammer strikes a wheel with petals, the daisy wheel, each petal containing a letter form at its tip.

On grand pianos, the soft pedal moves the hammers sideways so each hammer strikes only part of its string group.

Whenever the hammer strikes the three conventional strings, the aliquot string vibrates sympathetically.

Tiny figures carved in gold move on the dial synchronized in time to the repeaters hammer strikes.

The key also raises the damper; and immediately after the hammer strikes the wire it falls back, allowing the wire to resonate.