The quick-setting compass from Ecobra has a pressure lever system with an automatic spindle fixation, which can be used to quickly preset radii. Fine adjustment is then made using the center drive screw. Without using the extension rod, maximum diameters of 330 mm with extension up to 580 mm are possible. Knee joints on both legs make the Eobra compass particularly easy to adjust, and it can also be used for ink pens or other pens by means of the adapter. The accessories also include a box with two pencil replacement tips (2 mm).