impulse sprinkler 
Watering device whose single nozzle is mounted on a pivot that rotates in jerks, emitting a powerful spray to distribute water in a circle or arc.
sled 
Support for the sprinkler; it allows the device to be moved by pulling on the hose, which avoids treading on watered areas.
trip lever 
Ring-shaped part for adjusting the area to be watered (full or semicircle).
oscillating sprinkler 
Device with a bar containing multiple nozzles; it moves back and forth to spray water in the shape of a fan over large areas.
revolving sprinkler 
Watering device with rotating arms that distribute water in a full circle.