Does the adjustmet screw adjust both the spray length - 15' and width - 5', or mostly just the length?

Common sense indicates that if you adjust the length to bellow 5 feet, any further adjustment will adjust both length and width.

This nozzle's adjustment screw only adjusts the spray distance. If you're looking for a nozzle that will also adjust the spray pattern/arc, you can take a look at Orbit's adjustable nozzles or give our Support team a call at 1-800-488-6156. Thanks!