This tiny sprinkler has no moving parts (and therefore no parts to break down) but puts out a fine rain-like spray that covers an area up to 20' in diameter, depending on the water pressure.
It gives surprisingly even coverage because of the sprinkler's design. The inner construction creates a vortex, forcing the water to exit in fine droplets, very evenly dispersed over the entire area of the circle.
The most amazing part of all this is that a similar design was originally marketed in 1899, but was out of production for most of the century following.
3 1/2" overall. Made of non-rusting zinc/aluminum. Great for watering small lawns or gardens, or for focusing the water on one particular spot.