With the manual piston, the operator directly pushes the water through the grounds.

The operator pushes the bottom bead first in the well of the wheel.

Pushbuttons are often color-coded to associate them with their function so that the operator will not push the wrong button in error.

The catapult operator then pushes a button firing the catapult.

To encipher a letter, the operator pushed the relevant key and noted down which of the lamps lit.

After climbing into the new Morgan trains, the operator pushes a lever to release the still used manual braking system.

An operator will push a button at the marked point when following the music.

Then the operator pushes a second button to get a reading.

It's not the tool that counts, but the operator pushing the mouse and their imagination.

The operator pushed the long gear lever forward another notch, and tried a third time.