The pen is well made and looks very high. One has to get used to something, at which point one sets if you want to connect eg two lines together. I had somehow expected that here the beads on the pen tip (that this little transparent slivers holding) would be the measure. But you have to put about next one millimeter or so him. But here fuchst you on.
Shortcoming, in my opinion: The combination of pen tips beads for slices is a bit too fragile. After the first closing of the pin (screw cap) and reopening the disks was no longer on the pin. Fortunately, I found it in the cap. You can pull it off too easy, risk of loss. I screw him now more careful with cap upward and checke first location. ;)
But all in all a good decision.