A photographic tray agitator is set forth wherein an oscillating arm is cycled to maintain a photographic tray of chemicals constantly agitated for enhancing photographic development. A coil spring is wound within a housing to operate a clockwork that effects a cammed oscillation of an extending arm wherein the arm is adjustable in time of pivotment by means of a first friction adjustment bearing directly on the arm and a second friction adjustment adjusting tension on a drive gear of the clockwork mechanism.
