Pen pals
I learned technical drawing at school with this kind of pens (Rotring Isograph).
The pens on the picture deliver lines of respective thicknesses 0.20mm (8 Mil), 0.35mm, 0.5mm and 0.7mm.
They could be a delight to use, delivering perfect lines with a constant thickness and a deep black color if you were in a good day.
They could also be a source of frustration and refuse to get enough ink on the paper... or drip on an almost finished drawing.
But with hindsight, this had mostly to do with how good you took care of them and how relaxed you were when using them. 😉
Amazing extra feature: you could erase mistakes once the ink had dried by carefully scratching the paper with a razor blade.
Pen pals
I learned technical drawing at school with this kind of pens (Rotring Isograph).
The pens on the picture deliver lines of respective thicknesses 0.20mm (8 Mil), 0.35mm, 0.5mm and 0.7mm.
They could be a delight to use, delivering perfect lines with a constant thickness and a deep black color if you were in a good day.
They could also be a source of frustration and refuse to get enough ink on the paper... or drip on an almost finished drawing.
But with hindsight, this had mostly to do with how good you took care of them and how relaxed you were when using them. 😉
Amazing extra feature: you could erase mistakes once the ink had dried by carefully scratching the paper with a razor blade.