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Fig. 3. 7.
Mounting the pen
2
.
Remove the new pen's plastic cover, which keeps the fibre tip moist and should al-
ways be replaced when not in use
.
Pierce the paper disc at the rear of the pen with
a pin to initiate the ink flow.
3.
Slide on the new pen, ensuring that its grooves are firmly engaged in the lugs of the
pen holder, until the pen clicks securely into position.
15