Calipers are important for designers of 3D printed and laser cut products because they allow the designer to accurately measure the dimensions of an object. This is especially important in the design process, as it allows the designer to ensure that the final product will be the correct size and will fit together correctly. It is also important for quality control, as calipers can be used to verify that the final product meets the required tolerances. In short, calipers are an essential tool for designers of 3D printed and laser cut products because they help ensure that the final product is accurate, high-quality, and fit for its intended purpose.