This work discloses similarity properties of a high-aspect-ratio pulsating jet with lateral confinement exhibiting axis switching in a region close to the jet exit. The analysis is conducted separately within the major and minor planes of the jet source. The similarity relations derived from the in-plane flow equations are combined with experimental data collected in a recent three-dimen- sional velocimetry study of a glottal-like jet. Empirically, non-collapsing profiles are shown to rescale as collapsing profiles in the similarity variables within ranges of the streamwise coordinate, which are determined by the anal- ysis. The similarity properties are shown to be useful to make predictions on the jet axis-switching characteristics.