Staff notation, nib, G-pen, musical score, score, wind ensemble

This is a nib for a staff liner pen. Made in Germany.
Unused. 1 piece.
Purchased at a general store in Paris several years ago.
Can draw 5 lines at once.
The width of the 1st and 5th lines is approximately 1.2 cm.
The pen shaft is not included. This is just the nib.
When actually used, the thickness of each line may vary, or some lines may be faint. We are offering this to someone who understands that these are individual differences between nibs.