It has been claimed that such defects can, to a great extent, be
remedied by setting the escapement closer; that is, by bringing the
centers of the pallet staff and escape wheel nearer together. We hold
that such a course is not mechanical and, further, that there is not the
slightest necessity for such a policy.
ADVANTAGE OF MAKING LARGE DRAWINGS.
By making the drawings large, as we have already suggested and insisted
upon, we can secure an accuracy closely approximating perfection. As,
for instance, if we wish to get a lock of one and a half degrees on the
locking face of the entrance pallet _E_, we measure down on the arc
_c''_ from its intersection with the peripheral line _m_ one and a half
degrees, and establish the point _r_ and thus locate the outer angle of
the entrance pallet _E_, so there will really be one and a half degrees
of lock; and by measuring down on the arc _d'_ ten degrees from its
intersection with the peripheral line _m_, we locate the point _s_,
which determines the position of the inner angle of the entrance pallet,
and we know for a certainty that when this inner angle is freed from the
tooth it will be after the pallet (and, of course, the lever) has passed
through exactly ten degrees of angular motion.
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