The current work describes the development of a PC-based temperature acquisition system which was used to measure the transient temperature profiles of an extrusion blow-molded part during its cooling and solidification, and of a reheated preform in SBM. For the former, the temperatures at different locations across the thickness of the cooling part were measured. For the latter, the temperature measurements were carried out at different locations both across the thickness and along the length of the preform.