Modifiche

We measured several times (around 10) both the weight when the pen is loaded and when the pen is unloaded, the latter is used to estimate how much liquid remains in the [[feeder]], but we took as an indication of the filling capacity the value with the pen fully filled, because pens are filled once the ink is finished and no longer reaches the nib, and this also includes the one present in the feeder. From the various measurements we obtained average and standard deviation.

We measured several times (around 10) both the weight when the pen is loaded and when the pen is unloaded; the latter is used to estimate how much liquid remains in the [[feeder]], but we took as an indication of the filling capacity the value with the pen fully filled, because pens are filled once the ink is finished and no longer reaches the nib, and this also includes the one present in the feeder. From the various measurements we obtained average and standard deviation.