When marking out or setting up round work pieces what work holding devices simplify the process?

When marking out or setting up round workpieces, devices such as v-blocks and rotary tables are particularly useful. V-blocks securely hold cylindrical objects in a stable position, making it easier to mark precise angles or measurement lines. Rotary tables allow for accurate indexing and rotation of the workpiece, facilitating tasks like drilling or milling at specific intervals. Additionally, centers and chucks can also enhance the setup process by providing stable and adjustable mounting options.