Hasluck, Paul N. (Paul Nooncree), 1854-1931 · London ; New York : Cassell and Co. · leaf 27
tween the Nibs. milled head placed between the nibs of the pen, as in Fig. 24, and these are adjusted by right and left-hand threads on the screw of which the milled head forms part. Some ruling pens are made with the ivory handle to unscrew and serve as a pricker or station pointer. This form… … Ruling Pen Fig. 25.—How to Set a Ruling Pen. Enlarged. The ruling pen is more used than any other drawing instru- ment, and occasionally it requires setting or sharpening. This is not avery difficult operation after a little practice, yet many draughtsmen make a practice of sending their pens to…
Mechanical drawing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
