A device for determining the direction of a fluid spray pattern issuing from a fluid nozzle prior to flowing through the nozzle includes a body in the form of a template or a jig releasably attachable in a predetermined orientation to the nozzle tip. The body includes a pair of angularly related adjustable arms having axes which intersect the nozzle aperture and which extend such that the central axis of the nozzle bisects the angle between the arms. By applying the device to the nozzle tip in predetermined orientation, the arms define the lateral extremities of the spray pattern.
