151 xxx Isograph F set FFilm
Year: 1986

Isograph F FFilm set

This quite unique undocumented set was found in Poland, a gift to the museum from my dear friend Piotr.

In all rotring documentation I did not find it.
It includes
2 Isograph F 0.5mm size F and FL
1 rapidograph F iso 0.5mm + nib + cartridge
2 T 0.5mm fineliners F and regular
1 TB20 eraser
2 23ml ink bottles F and FL

The empty case schematics itself is also undocumented and only one I have seen that has reserved space for two isographs and one rapidograph.

Seems to be dedicated for use of F and FL film ink for use on all matt drafting film.
FL ink includes latex as a binding agent: even highet opacity and better adhesion.
Waterproof when dry.

Set has a bit handmade feeling since both isographs F and T fineliners are the same but with stickers, one used on F and FL ink bottles and on polymer mines. But everything seem to fit in place and instructions are original for Isograph F and rapidograph F iso...so no reason to think it is not genuine.
Space for two ink bottles is unusual and indicates it was specially designed for 2 different ink bottles, so F and FL film.

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