I've not used my parallel pens for sometime, the ink all gone so I gave them a good clean and put in new cartridges. Above is my first practise sheet after cleaning.
Parallel pens are made by Pilot, the nib is made up of two parallel plates between which the ink flows. Nibs of different sizes are available as well as coloured cartridges. They are used for calligraphy but as you can see I use them for drawing.
I coloured this rose in with watercolours.
I coloured this rose in with Letraset Aquamarkers.