In the present pedagogical work, the importance of the teaching mechanical engineering concepts using 3D spatial visualization was emphasized and explained using specific examples. Elementary concepts of the mechanical engineering such as vortex flow, geometric and dimensional tolerances, orthographic projections, machine components and hydraulic machinery were depicted in 3D, using a computer aided geometric modeling software. The conventional schematic methods used to describe the mechanical engineering concepts were mapped into spatial 3D geometric models. These 3D geometric models bring clarity in understanding the complex engineering concepts in an accurate and precise way because of the ease in visualization. An improvement in students’ level of understanding is recorded through percentage marks obtained in the students’ performance in the classroom environment.
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