Tells you in seconds, if your printers bed is bend or out of level in any way.Ultra fast, lowest material waste. 200mm ring run in less than 2 minutes.Simple as can be, no unnessessary bells and whistles.For any 3D printer of any make. Just know your printers bed size.Full bed level check or place smaller ones individually for a check of a certain bed area. Use a single ring, a choice of several rings or a ready rings combination.I provide a file for each single ring and rings combinations of...