Pen-loop sizes
The pen-loop measurements in the wiki are made by myself and/or sent in by users. They may differ, e.g. depending on each persons defintion of "snug". If the fit is leaning against a smaller size I tend to list both sizes. e.g. "9mm-10mm-". If the model has elastic pen-loops they should by measured using a pen that has a "good" or "nice" fit. They should not be overstretched and still be able to give the pen a foothold.
6mm
pen-models with that size: Lamy Spirit ballpoint pen
8mm
pen-models with that size: Lamy cp1 ballpoint pen
9mm
pen-models with that size: Lamy cp1 duo-pen, Rotring Rapid Pro ballpoint pen;
10mm
pen-models with that size: Parker Jotter ballpoint pen
11mm
pen-models with that size: Lamy Safari Duo multi-pen, Ballograf Epoca ballpoint pen;
12mm
pen-models with that size: Lamy Safari fountain pen, Lamy Safari ballpoint pen, Lamy 2000 multi-pen, Lamy 2000 ballpoint pen, Faber-Castell Loom fountain pen;
13mm
pen-models with that size: Lamy al-star fountain pen, TWSBI Eco fountain pen, Pilot Metropol fountain pen;