Why do you need to select and use set datum faces and what are the effects of taking readings from different datum?

Selecting and using set datum faces is crucial for ensuring consistent and accurate measurements in manufacturing and engineering processes. Datum faces provide a reference point that establishes a common framework for all measurements, reducing variability and enhancing precision. Taking readings from different datum can lead to discrepancies and inaccuracies, as variations in reference points can distort the intended dimensions and tolerances, ultimately affecting the quality and functionality of the final product.