👉 A sparrer is a type of machine tool that is designed to create cylindrical holes or channels in a flat surface. It consists of a rotating circular hole cutter and an auxiliary spindle, which allows for precise alignment of the cutting process with the cylinder's diameter. Typically, a sparrer has a large, cylindrical opening at the center of the handle, allowing it to be used as a tool for drilling or tapping. The cylindrical opening can then be adjusted to create different diameters and sizes
