Why might a drawing show all the shafts of a gear train in a single plane?

A drawing that shows all the shafts of a gear train in a single plane is designed to avoid confusion. By placing all shafts in one plane, it enhances clarity and makes it easier for anyone interpreting the drawing to visualize how the components are arranged and how they interact with one another. This layout helps to prevent misinterpretation that could arise from a more complex three-dimensional arrangement, where components might overlap or obscure one another.

When shafts are aligned this way, it also aids in understanding the relationships between various parts, such as their relative positions and the alignment needed for proper function. This is particularly important in mechanical designs where precision is critical. Thus, the single-plane representation effectively eliminates potential ambiguities, supporting clear communication of the design intent.