The aim of this study was to observe the properties of a spray field, with micro particle image velocimetry (£gPIV) and holographic interferometric particle imaging (IPI) employed for the imaging and analysis of the global spray field. The experiment adopted different nozzle diameters (dj = 200 £gm, and dj = 500 £gm) and different values of gauge pressure (£GP = 300 kPa, £GP = 500 kPa, and £GP = 700 kPa) as the main parameters, and DI (distilled) Water as the working medium. The study was divided into two parts. The first part used the £gPIV system to observe the two-dimensional global visualization of spray field distribution and spray angle from each nozzle under different values of gauge pressure (£GP). The flow velocity distribution and variations (axial velocity, and impact velocity) of the global spray frame were also measured. As the nozzle diameter would determine the distribution of spray droplets, the second part adopted the IPI system to measure and explore the atomized droplet sizes from each nozzle under different values of gauge pressure (£GP), whereby drop size histograms were created through statistical analysis.