28 August 2015

Early Pilot Nibs. IV. Size 2

Size 2 nibs are significantly bigger than those of size 1, and reach a total length of about 23 to 24 mm. There seem to be some variations, towards a smaller size, in the dimensions of those units manufactured in the 1950s.

Manufacturing date .Aug 1926. .Sep 1937. .Oct 1953.
Length (mm) 24.4 24.2 22.9
Width (mm) 5.8 6.0 5.8
Feed diameter (mm) 5.0 5.0 4.9
Weight (g) 0.3 0.2 0.3
Dimensions of three Pilot nibs of size 2 made of 14 K gold.

Nib made on November of 1926. Very simple engraving

From September of 1937.

From 1953. Note the JIS mark. The feed of this pen, and of those of the 53R models (1950s) are slightly thinner on the area attached to the section.

As can be seen on the pictures, there are size-2 nibs made of steel. The exact dimensions of these units are not available—the integrity of the pen is still more important that those data.

Steel nib of a nomikomi-shiki pen from around 1940.

A post-war 53R-T model. Note, again, the JIS mark.

The engravings on the nibs, as was the case with other sizes, show a clear evolution along the years of production.

Pilot Justus, 1979 model – Pilot Blue

Bruno Taut
Nakano, August 28th, 2015
etiquetas: Pilot, plumín


Saltire Turquoise said...


Could the changes be down to re-tooling, post 1945, with new machines in new factories?

Bruno Taut said...

That is a likely explanation, but I cannot support it right now.

Thanks for passing by and commenting.



Anonymous said...

What do you mean by preserving pen integrity?

Bruno Taut said...

Thanks, Anonymous, for passing by and commenting.

When measuring some dimensions of a nib, particularly the shoulder's width, you might be afraid of deforming the nib with your caliper. Being too careful might result on larger measurement.

Thanks for passing by and commenting.


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