Reservoir pens, sometimes called technical pens, contain their own reservoir
of ink. These pens draw lines of uniform width. They have a conical or
tubular tip. Tubular tipped reservoir pens can fit into a hand lettering device
to do lettering work. Inside the pen there is a weighted needle to regulate ink
flow. A penis ready for use when the needle can move freely in the pen.
Figure 2-40 shows an exploded view of a reservoir pen.
Figure 2-40. Nomenclature of a reservoir pen.
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