180 035 foliograph m 0.35mm
Year: 1976

180035 Foliograph m 0.35mm

Foliograph is first found mentioned in 1969., this particular pen is from 1976.
Foliograph with noticeable grey body made of more resistant plastic and high quality tungsten carbide nip, later changed into gray isograph P.
Made from solvent-resistant material and are therefore equally suitable for dissolving etching inks and regular drawing inks.



From catalog 1976.
The rotring foliograph is the answer to a great many problems.
The surface of a drawing film can be well over a thousand times more abrasive then a good quality tracing paper.
A conventional steel tipped drawing pens nib will wear very rapidly on an abrasive surface such as modern drafting films whereas the foliograph with tungsten carbide tip will not.
Furthermore, whereas etching ink would destroy the plastic body of a normal drawing pen, the foliograph is manufactured of grey acetate resistant material. Thus, permanent, chemically based, etching inks can be applied on film, foil and plastic surfaces.
Both water based and etching inks may be used in these pens. It is, however, essential that these two types of inks are never mixed. The pen must be thoroughly cleaned and dry when changing from chemically based ink to water based ink.
When used on printed circuit boards, conductor patterns can be drawn and under normal circumstances these are completely resistant to the etching to which the boards are subjected. However, for this purpose, the foliograph pen must be used in conjunction with an etching ink. The pen is ideal for use on film for overhead projection work.
There are two types of foliograph available:

The foliograph
For drawing in accordance with DIN 15 series 2
190010 0.1mm (nib 790010)
190015 0.15mm (nib 790015)
190020 0.2mm (nib 790020)
190030 0.3mm (nib 790030)
190040 0.4mm (nib 790040)
190050 0.5mm (nib 790050)
190060 0.6mm (nib 790060)
190080 0.8mm (nib 790080)
190120 1.2mm (nib 790120)

The foliograph m (Conforming to test standard DIN 6775)
For drawing and lettering in accordance with DIN 15, 16, and 17 series 1.

180013 0.13mm (nib 780013)
180018 0.15mm (nib 780015)
180025 0.25mm (nib 780025)
180035 0.35mm (nib 780035)
180050 0.5mm (nib 780050)
180070 0.7mm (nib 780070)
180100 1.0mm (nib 780100)
180140 1.4mm (nib 780140)
180200 2.0mm (nib 780200)


Important notice (from catalog 1980.)
Penetrating drawing inks can only be used in solvent-resistant ink pens, e.g. foliograph m or foliograph. Water should not be used to clean the mechanism, only the special rotring solvent for etching inks.

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